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Open cluster M11 in the ECU of Sobieski - M11 open cluster in Scutum - M11 (NGC 6705) is a cluster of about 3000 stars. Image obtained by Siding Spring Clusters of bright blue stars like M11 are found scattered among the spiral arms of the Milky Way and other galaxies like it. They are a clear sign that star formation is active, because such clusters are usually very young and short lived. The stars in M11 all formed from the same material and at about the same time, a few million years ago. In 100 million years or so, all the brightest stars in the group will have evolved into cool supergiants and exploded as supernovae, leaving behind large numbers of low mass, relatively faint stars whose lives will be much longer and whose end will be much less dramatic. Located in the constellation of Scutum, it is sometimes mistaken for a loose globular cluster. M11 is also called the “” Wild Duck Cluster”” because of it's resemblance to a flight of wild ducks when viewed in a telescope. M11, wit

Open cluster M11 in the ECU of Sobieski - M11 open cluster in Scutum - M11 (NGC 6705) is a cluster of about 3000 stars. Image obtained by Siding Spring Clusters of bright blue stars like M11 are found scattered among the spiral arms of the Milky Way and other galaxies like it. They are a clear sign that star formation is active, because such clusters are usually very young and short lived. The stars in M11 all formed from the same material and at about the same time, a few million years ago. In 100 million years or so, all the brightest stars in the group will have evolved into cool supergiants and exploded as supernovae, leaving behind large numbers of low mass, relatively faint stars whose lives will be much longer and whose end will be much less dramatic. Located in the constellation of Scutum, it is sometimes mistaken for a loose globular cluster. M11 is also called the “” Wild Duck Cluster”” because of it's resemblance to a flight of wild ducks when viewed in a telescope. M11, wit

PIX4568454

Barree spiral galaxy NGC 1097 - NGC 1097, a barred spiral galaxy and elliptical companion - Located at a distance of about 45 million years - light in the constellation of the Furnneau, NGC 1097 is subject to intense star formation and is an active nucleus galaxy with a supermassive black hole in its heart. At the top right of the image, a special elliptical satellite galaxy, NGC 1097A, probably interacted with NGC 1097 in the past. Image obtained by Siding Spring's 3.9m telescope. NGC 1097 is a fine, barred spiral galaxy seen from a distance of about 50 million light years. The galaxy is unusual in several respects. It is a fairly strong radio source and is also bright at far infrared wavelenghts, indicating the presence of warm dust. The galaxy is also interacting woth a small elliptical galaxy, seen in the upper right (NW) corner of the picture. This galaxy shows the subtle interleaved 'shells' or stepped changes in brightness resulting from the interaction. Finally, the galaxy is k

Barree spiral galaxy NGC 1097 - NGC 1097, a barred spiral galaxy and elliptical companion - Located at a distance of about 45 million years - light in the constellation of the Furnneau, NGC 1097 is subject to intense star formation and is an active nucleus galaxy with a supermassive black hole in its heart. At the top right of the image, a special elliptical satellite galaxy, NGC 1097A, probably interacted with NGC 1097 in the past. Image obtained by Siding Spring's 3.9m telescope. NGC 1097 is a fine, barred spiral galaxy seen from a distance of about 50 million light years. The galaxy is unusual in several respects. It is a fairly strong radio source and is also bright at far infrared wavelenghts, indicating the presence of warm dust. The galaxy is also interacting woth a small elliptical galaxy, seen in the upper right (NW) corner of the picture. This galaxy shows the subtle interleaved 'shells' or stepped changes in brightness resulting from the interaction. Finally, the galaxy is k

PIX4609643

Avalanches sur Mars - Mars: avalanches on North Polar Scarps - Detail on a cliff in the region of the north pole of Mars. Part of the surface, consisting of dust and carbon dioxide frost, has become detached creating dust avalanches

Avalanches sur Mars - Mars: avalanches on North Polar Scarps - Detail on a cliff in the region of the north pole of Mars. Part of the surface, consisting of dust and carbon dioxide frost, has become detached creating dust avalanches

PIX4616545

The Rosette Nebula in the Unicorn - The Rosette Nebula and NGC 2244 cluster - The Rosette Nebula is a vast cloud of dust and gas located about 5500 years from Earth. Towards the center of the nebula, a cluster of blue stars, NGC 2244 formed less than a million years ago. Image obtained from the 1.2m Schmidt UK telescope of Siding Spring. The Rosette Nebula exhibits a striking circular symmetry which gives it the appearance of a partly opened rose, an allusion further enhanced by the rich red hues seen in this colour photograph. Near the centre of the nebula is a cluster of blue stars catalogued as NGC 2244. These stars are responsible for making the nebula visible and for creating the hollowed - out central cavity. This cluster of stars formed from the gas which now surrounds it less than a million years ago and is thus very young on the cosmic timescale. The gas and dust at the centre of the nebula have been forced away from the bright stars by radiation pressure and the intense stell

The Rosette Nebula in the Unicorn - The Rosette Nebula and NGC 2244 cluster - The Rosette Nebula is a vast cloud of dust and gas located about 5500 years from Earth. Towards the center of the nebula, a cluster of blue stars, NGC 2244 formed less than a million years ago. Image obtained from the 1.2m Schmidt UK telescope of Siding Spring. The Rosette Nebula exhibits a striking circular symmetry which gives it the appearance of a partly opened rose, an allusion further enhanced by the rich red hues seen in this colour photograph. Near the centre of the nebula is a cluster of blue stars catalogued as NGC 2244. These stars are responsible for making the nebula visible and for creating the hollowed - out central cavity. This cluster of stars formed from the gas which now surrounds it less than a million years ago and is thus very young on the cosmic timescale. The gas and dust at the centre of the nebula have been forced away from the bright stars by radiation pressure and the intense stell

PIX4618445

Eagle Nebula (IC 4703) and M16 star cluster in the Snake - The dust lanes in Messier 16 (NGC 6611) - Located in the Snake, this nebula is about 6000 years away from Earth. The M16 star cluster is a cluster of young stars formed about 2 million years ago in the Eagle nebula, IC 4703. These stars are much warmer than the Sun and can be 30 times more massive. Image made with Siding Spring's 3.9m telescope. There are few clearer examples anywhere of the intimate relationship between dust, gas and young stars than M16. We see a young cluster of stars (NGC 6611) which formed about 2 million years ago, illuminating a cloud of hydrogen gas. The gas is also dusty, and in places the dust is dense enough to prevent starlight from reaching the gas and making it glow with its distinctive red hue. The luminous hydrogen provides a vivid background against which are seen numerous dark lanes and discrete globules of dust. Many of the dusty clouds are edged with bright rims which indicate the direction

Eagle Nebula (IC 4703) and M16 star cluster in the Snake - The dust lanes in Messier 16 (NGC 6611) - Located in the Snake, this nebula is about 6000 years away from Earth. The M16 star cluster is a cluster of young stars formed about 2 million years ago in the Eagle nebula, IC 4703. These stars are much warmer than the Sun and can be 30 times more massive. Image made with Siding Spring's 3.9m telescope. There are few clearer examples anywhere of the intimate relationship between dust, gas and young stars than M16. We see a young cluster of stars (NGC 6611) which formed about 2 million years ago, illuminating a cloud of hydrogen gas. The gas is also dusty, and in places the dust is dense enough to prevent starlight from reaching the gas and making it glow with its distinctive red hue. The luminous hydrogen provides a vivid background against which are seen numerous dark lanes and discrete globules of dust. Many of the dusty clouds are edged with bright rims which indicate the direction

PIX4619969

Nebulae NGC 3603 and NGC 3576 in Carene - NGC 3576 and 3603 in Carina - NGC 3576 (right) is located about 7000 years - light from Earth; NGC 3603 (left) is twice as far away. These two nebulae are located in the constellation Carene. Image obtained by Siding Spring's 3.9m telescope. These two star - formation regions appear side by side in the sky and seem to be linked as parts of an extensive nebula. However, the apparent intimacy is line - of - sight effect because these two objects are at quite different distances from the Sun. The curious looped nebula NGC 3576 is about 7000 light years from us while its neighbour NGC 3603 is more than twice as far away. That NGC 3603 is the more distant is confirmed by its colour, which is a ruddier red than the pinkish hue of NGC 3576. The change in colour is due to absorption of the blue - light component of the nebulosity by dust particles in the much longer line of sight. This effect is known as interstellar reddening, though it would be bette

Nebulae NGC 3603 and NGC 3576 in Carene - NGC 3576 and 3603 in Carina - NGC 3576 (right) is located about 7000 years - light from Earth; NGC 3603 (left) is twice as far away. These two nebulae are located in the constellation Carene. Image obtained by Siding Spring's 3.9m telescope. These two star - formation regions appear side by side in the sky and seem to be linked as parts of an extensive nebula. However, the apparent intimacy is line - of - sight effect because these two objects are at quite different distances from the Sun. The curious looped nebula NGC 3576 is about 7000 light years from us while its neighbour NGC 3603 is more than twice as far away. That NGC 3603 is the more distant is confirmed by its colour, which is a ruddier red than the pinkish hue of NGC 3576. The change in colour is due to absorption of the blue - light component of the nebulosity by dust particles in the much longer line of sight. This effect is known as interstellar reddening, though it would be bette

PIX4619197

Nebula Trifide (M20) in the constellation Sagittarius - Trifid nebula (M20) in Sagittarius - View of the Trifide nebula (M20/NGC 6514) located in the constellation Sagittarius between 5000 and 10,000 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope. The spectacular Trifid nebula (Messier 20) is one of the best known in the sky. It is a striking mixture of brilliant red light emitted from excited hydrogen gas and the soft blue glow of a reflection nebula. The blue arises from starlight, scattered by dust particles between the stars. The size of the particles is minute, similar to those of smoke, which also has a bluish hue. However, the scattered light is not a pure blue, and if we see it through a medium that is yellow (i.e. absorbs blue light) some green colouration remains. This effect can be seen in some of the darker parts of the faint reflection nebula that surrounds the Trifid, where partial absorption of light by foreground dust provides a yellow 'filte

Nebula Trifide (M20) in the constellation Sagittarius - Trifid nebula (M20) in Sagittarius - View of the Trifide nebula (M20/NGC 6514) located in the constellation Sagittarius between 5000 and 10,000 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope. The spectacular Trifid nebula (Messier 20) is one of the best known in the sky. It is a striking mixture of brilliant red light emitted from excited hydrogen gas and the soft blue glow of a reflection nebula. The blue arises from starlight, scattered by dust particles between the stars. The size of the particles is minute, similar to those of smoke, which also has a bluish hue. However, the scattered light is not a pure blue, and if we see it through a medium that is yellow (i.e. absorbs blue light) some green colouration remains. This effect can be seen in some of the darker parts of the faint reflection nebula that surrounds the Trifid, where partial absorption of light by foreground dust provides a yellow 'filte

PIX4619447

Nebulae IC 1848 and IC 1805 in Cassiopee - The north is at top. IC1848 nebula and the star cluster embedded in it are located just 4 degrees north of h Persei, one of the two members of the famous Double Cluster. The same nebula also hosts Collinder 33 (Cr33) and Collinder 34 (Cr34) star clusters. The faint nebulae IC1871 and Sh2 - 198 are just near the IC1848. Just one and a half degree north - west from IC1848 is located the IC1805 complex. This rich but faint nebular complex resides 5* NNE of the Double Cluster in Perseus. The largest and very diffuse part of it, IC1805, contains large and bright star cluster Melotte 15 at its center. Other star clusters (NGC1027, Berkeley 65 and Markarian 6) are located around its edges. The brightest part of IC1805 complex consists of nebulae IC1795 and NGC896 which together are intersected by narrow NW to SE streaks of dust. Also the two Maffei galaxies are included in this view at bottom center. This image is based on data acquired by the Oschin

Nebulae IC 1848 and IC 1805 in Cassiopee - The north is at top. IC1848 nebula and the star cluster embedded in it are located just 4 degrees north of h Persei, one of the two members of the famous Double Cluster. The same nebula also hosts Collinder 33 (Cr33) and Collinder 34 (Cr34) star clusters. The faint nebulae IC1871 and Sh2 - 198 are just near the IC1848. Just one and a half degree north - west from IC1848 is located the IC1805 complex. This rich but faint nebular complex resides 5* NNE of the Double Cluster in Perseus. The largest and very diffuse part of it, IC1805, contains large and bright star cluster Melotte 15 at its center. Other star clusters (NGC1027, Berkeley 65 and Markarian 6) are located around its edges. The brightest part of IC1805 complex consists of nebulae IC1795 and NGC896 which together are intersected by narrow NW to SE streaks of dust. Also the two Maffei galaxies are included in this view at bottom center. This image is based on data acquired by the Oschin

D. De Martin

PIX4622341

Southern Crown Nebula - The CRA reflection nebula - R Coronae Australis is a region of star formations visible in the southern hemisphere. It is located about 500 light years away from Earth. On the right, the globular cluster NGC 6723, located 30 000 light years from Earth in Sagittarius. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. Corona Australis (the southern crown, CRA) is in the far southern sky but visible from the southern states of the USA. The constellation is small but distinctive. The conspicuous globular cluster NGC 6723 is at the western (right) edge of the photograph, but it is in Sagittarius, and is about 30,000 light years distant. Almost all the nebulosity here is starlight, reflected from minute grains of dust, some of which gather into darker condensations ('molecular clouds'), blotting out the background stars. Fainter features can be seen here. Shiny NGC 6726 - 27 near middle of image contains both a visual binary and a variable star. Othe

Southern Crown Nebula - The CRA reflection nebula - R Coronae Australis is a region of star formations visible in the southern hemisphere. It is located about 500 light years away from Earth. On the right, the globular cluster NGC 6723, located 30 000 light years from Earth in Sagittarius. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. Corona Australis (the southern crown, CRA) is in the far southern sky but visible from the southern states of the USA. The constellation is small but distinctive. The conspicuous globular cluster NGC 6723 is at the western (right) edge of the photograph, but it is in Sagittarius, and is about 30,000 light years distant. Almost all the nebulosity here is starlight, reflected from minute grains of dust, some of which gather into darker condensations ('molecular clouds'), blotting out the background stars. Fainter features can be seen here. Shiny NGC 6726 - 27 near middle of image contains both a visual binary and a variable star. Othe

PIX4620295

Martian dunes in summer - Mars: Summer view of Dunes: Detail on dunes near the northern polar cap of Mars in summer. Image obtained by the HIRISE camera of the Mars Reconnaissance probe orbiter on 1 September 2008. HIRISE is a 50 cm telescope that observes visible and near infrared. This dune field formed near the base of the North Polar cap. Dunes require a source of loose particulate material to form. The source of the northern dune fields around the polar cap may be from the layers of dusty ice that are eroded by strong polar winds. This image was taken during the Martian northern summer, so there is no frost present on the dunes. The dunes closest to the base of the polar cap are long and parallel, indicating strong winds from the direction of the cap. As they get farther away from the polar cap, they start to form more crescent shaped dunes, called barchan dunes. Repeated observations by HiRise of dunes like these show measurable changes in some locations. This discovery adds to t

Martian dunes in summer - Mars: Summer view of Dunes: Detail on dunes near the northern polar cap of Mars in summer. Image obtained by the HIRISE camera of the Mars Reconnaissance probe orbiter on 1 September 2008. HIRISE is a 50 cm telescope that observes visible and near infrared. This dune field formed near the base of the North Polar cap. Dunes require a source of loose particulate material to form. The source of the northern dune fields around the polar cap may be from the layers of dusty ice that are eroded by strong polar winds. This image was taken during the Martian northern summer, so there is no frost present on the dunes. The dunes closest to the base of the polar cap are long and parallel, indicating strong winds from the direction of the cap. As they get farther away from the polar cap, they start to form more crescent shaped dunes, called barchan dunes. Repeated observations by HiRise of dunes like these show measurable changes in some locations. This discovery adds to t

PIX4580056

Globular cluster NGC 3201 in Veles - Globular cluster NGC 3201 in Vela - This cluster of stars is located about 15,000 years ago - light from Earth

Globular cluster NGC 3201 in Veles - Globular cluster NGC 3201 in Vela - This cluster of stars is located about 15,000 years ago - light from Earth

PIX4564372

Martian dunes in Spring - March: Frost - covered dunes in crater - Detail on dunes in a crater located near the north pole of Mars. Clearly, areas covered with carbon dioxide gel appear on this image obtained by the HIRISE camera of the Mars Reconnaissance probe orbiter on January 1, 2010. HIRISE is a 50 cm telescope that observes visible and near infrared Dunes are often found on crater floors. In the winter time at high northern latitudes the terrain is covered by carbon dioxide ice (dry ice). In the spring as this seasonal ice evaporates many unusual features unique to Mars are visible. On the floor of this crater where there are no dunes, the ice forms an uninterrupted layer. On the dunes however, dark streaks form as surface material from below the ice is mobilized and deposited on top of the ice. In some cases this mobile material probably slides down the steep face of the dune, while in other cases it may be literally blown out in a process of gas release similar to removing a c

Martian dunes in Spring - March: Frost - covered dunes in crater - Detail on dunes in a crater located near the north pole of Mars. Clearly, areas covered with carbon dioxide gel appear on this image obtained by the HIRISE camera of the Mars Reconnaissance probe orbiter on January 1, 2010. HIRISE is a 50 cm telescope that observes visible and near infrared Dunes are often found on crater floors. In the winter time at high northern latitudes the terrain is covered by carbon dioxide ice (dry ice). In the spring as this seasonal ice evaporates many unusual features unique to Mars are visible. On the floor of this crater where there are no dunes, the ice forms an uninterrupted layer. On the dunes however, dark streaks form as surface material from below the ice is mobilized and deposited on top of the ice. In some cases this mobile material probably slides down the steep face of the dune, while in other cases it may be literally blown out in a process of gas release similar to removing a c

PIX4616489

Edward Pellew,1st Viscount Exmouth, Admiral (1757-1835) c.1817 A full-length figure. Pellew is shown standing on his quarter-deck, during the bombardment of Algiers, bareheaded, a telescope in his right hand and the left raised. He wears the ribbon and insignia of the Bath and several foreign decorations. Viscount Exmouth bombarded Algiers in August 1816 and rescued 3,000 Christian slaves from the Bey. Served in the War of American Independence. Commander-in-Chief East Indies 1804-09. During this period he defeated the Dutch at Batavia and Gresik and protected British ships against French privateers.

Edward Pellew,1st Viscount Exmouth, Admiral (1757-1835) c.1817 A full-length figure. Pellew is shown standing on his quarter-deck, during the bombardment of Algiers, bareheaded, a telescope in his right hand and the left raised. He wears the ribbon and insignia of the Bath and several foreign decorations. Viscount Exmouth bombarded Algiers in August 1816 and rescued 3,000 Christian slaves from the Bey. Served in the War of American Independence. Commander-in-Chief East Indies 1804-09. During this period he defeated the Dutch at Batavia and Gresik and protected British ships against French privateers.

BL3304785

Towards the Small Magellanic Cloud, 2015 (digital photo)

Towards the Small Magellanic Cloud, 2015 (digital photo)

Bobillo, Ignacio Diaz (20th-21st century)

MMM7340387

M63: Star Streams and the Sunflower Galaxy, 2016 (digital photo)

M63: Star Streams and the Sunflower Galaxy, 2016 (digital photo)

Bryzgalov, Oleg (21st century)

MMM7341114

Huge Filaprom, 2015 (digital photo)

Huge Filaprom, 2015 (digital photo)

Corban, Gabriel Octavian (21st century)

MMM7340354

M87 elliptical galaxy in Virgo - M87 elliptical galaxy in Virgo - The M87 galaxy (NGC 4486) is located about 60 million years ago - light from Earth, in the heart of the Virgin's cluster. M87 is the brightest radio source in the constellation, it is also called Virgo A. Image made with Siding Spring's 3.9m telescope. Messier 87 (NGC 4486) is at the heart of the Virgo cluster and has a mass many times that of the Milky Way, itself no lightweight. Unlike our galaxy however, M87 is an elliptical galaxy. Though it appears more - or - less spherical on this photograph, a deep image shows it to be markedly elongated. Also unlike the Milky Way, M87 contains relatively little gas and dust. It is composed mainly of cool stars, which gives it a yellowish colour, in contrast to the blue of spiral galaxies. Despite the lack of star - forming materials, M87 is not a quiescent backwater. It is a powerful source of radio waves and the orbits of stars near its nucleus suggest they are held by a very m

M87 elliptical galaxy in Virgo - M87 elliptical galaxy in Virgo - The M87 galaxy (NGC 4486) is located about 60 million years ago - light from Earth, in the heart of the Virgin's cluster. M87 is the brightest radio source in the constellation, it is also called Virgo A. Image made with Siding Spring's 3.9m telescope. Messier 87 (NGC 4486) is at the heart of the Virgo cluster and has a mass many times that of the Milky Way, itself no lightweight. Unlike our galaxy however, M87 is an elliptical galaxy. Though it appears more - or - less spherical on this photograph, a deep image shows it to be markedly elongated. Also unlike the Milky Way, M87 contains relatively little gas and dust. It is composed mainly of cool stars, which gives it a yellowish colour, in contrast to the blue of spiral galaxies. Despite the lack of star - forming materials, M87 is not a quiescent backwater. It is a powerful source of radio waves and the orbits of stars near its nucleus suggest they are held by a very m

PIX4611429

Nebula NGC 3372 in the Carene in false colours - NGC 3372 Carina nebula - The nebula of the Carene is located about 8000 years - light from the Earth. It is home to many hot stars, including the massive star Eta Carinae in the centre of the nebula. Top right is the cluster of stars NGC 3293. Image obtained from the 1.2m Schmidt UK telescope of Siding Spring. Although no bright naked - eye stars are associated with the Carina nebula now, 150 years ago there blazed forth here one of the most unusual and peculiar stars ever seen. The star is known as Eta Carinae and for a few months in 1843 it was the second or third brightest star in the sky. Since then it has faded and is today about 1000 times fainter than it was at its brightest as the nebula it created during its outburst has cooled and become opaque. The whole region around Eta Carinae is rich in hot stars of which Eta is an extreme example and it is their combined radiation that produces the spectacular Carina nebula that dominates

Nebula NGC 3372 in the Carene in false colours - NGC 3372 Carina nebula - The nebula of the Carene is located about 8000 years - light from the Earth. It is home to many hot stars, including the massive star Eta Carinae in the centre of the nebula. Top right is the cluster of stars NGC 3293. Image obtained from the 1.2m Schmidt UK telescope of Siding Spring. Although no bright naked - eye stars are associated with the Carina nebula now, 150 years ago there blazed forth here one of the most unusual and peculiar stars ever seen. The star is known as Eta Carinae and for a few months in 1843 it was the second or third brightest star in the sky. Since then it has faded and is today about 1000 times fainter than it was at its brightest as the nebula it created during its outburst has cooled and become opaque. The whole region around Eta Carinae is rich in hot stars of which Eta is an extreme example and it is their combined radiation that produces the spectacular Carina nebula that dominates

PIX4618867

Nebulae NGC 3603 and NGC 3576 in Carene - NGC 3576 and 3603 in Carina - NGC 3576 (right) is located about 7000 years - light from Earth; NGC 3603 (left) is twice as far away. These two nebulae are located in the constellation Carene. Image obtained by Siding Spring's 3.9m telescope. These two star - formation regions appear side by side in the sky and seem to be linked as parts of an extensive nebula. However, the apparent intimacy is line - of - sight effect because these two objects are at quite different distances from the Sun. The curious looped nebula NGC 3576 is about 7000 light years from us while its neighbour NGC 3603 is more than twice as far away. That NGC 3603 is the more distant is confirmed by its colour, which is a ruddier red than the pinkish hue of NGC 3576. The change in colour is due to absorption of the blue - light component of the nebulosity by dust particles in the much longer line of sight. This effect is known as interstellar reddening, though it would be bette

Nebulae NGC 3603 and NGC 3576 in Carene - NGC 3576 and 3603 in Carina - NGC 3576 (right) is located about 7000 years - light from Earth; NGC 3603 (left) is twice as far away. These two nebulae are located in the constellation Carene. Image obtained by Siding Spring's 3.9m telescope. These two star - formation regions appear side by side in the sky and seem to be linked as parts of an extensive nebula. However, the apparent intimacy is line - of - sight effect because these two objects are at quite different distances from the Sun. The curious looped nebula NGC 3576 is about 7000 light years from us while its neighbour NGC 3603 is more than twice as far away. That NGC 3603 is the more distant is confirmed by its colour, which is a ruddier red than the pinkish hue of NGC 3576. The change in colour is due to absorption of the blue - light component of the nebulosity by dust particles in the much longer line of sight. This effect is known as interstellar reddening, though it would be bette

PIX4619201

Spiral galaxy M74 in Pisces - Spiral galaxy M74 in Pisces - Image of the spiral galaxy M74 (NGC 628). This galaxy is about 80,000 light years and is 30 million light years apart. Viewed face on, as it appeared about 30 million years ago, M74 is considered to be one of the most photogenic spiral galaxies in the sky. The galaxy is rich in young bright blue stars and glowing red regions of dust and molecular hydrogen where new stars are being created. M74, however, is quite camera shy - it has a low surface brightness that makes it challenging for both visual observers and astrophotographers to see it's entire form. The Chandra X - Ray observatory, discovered M74 to be the home of a super massive black hole, tucked away in one of it's outer arms. This black hole is one of the largest ever discovered and has the mass of over 10,000 suns. Thirty six, fifteen minute photographs were combined to create this picture, with a total exposure time of almost nine hours. The images were taken with a

Spiral galaxy M74 in Pisces - Spiral galaxy M74 in Pisces - Image of the spiral galaxy M74 (NGC 628). This galaxy is about 80,000 light years and is 30 million light years apart. Viewed face on, as it appeared about 30 million years ago, M74 is considered to be one of the most photogenic spiral galaxies in the sky. The galaxy is rich in young bright blue stars and glowing red regions of dust and molecular hydrogen where new stars are being created. M74, however, is quite camera shy - it has a low surface brightness that makes it challenging for both visual observers and astrophotographers to see it's entire form. The Chandra X - Ray observatory, discovered M74 to be the home of a super massive black hole, tucked away in one of it's outer arms. This black hole is one of the largest ever discovered and has the mass of over 10,000 suns. Thirty six, fifteen minute photographs were combined to create this picture, with a total exposure time of almost nine hours. The images were taken with a

R. Jay GaBany

PIX4609403

Beta Pictoris b - Artist's view of Beta Pictoris b, a giant exoplanet with a mass equivalent to 9 times the mass of Jupiter orbiting the star Beta Pictoris. This artist's impression shows how the planet inside the disc of Beta Pictoris may look. Only 12 million years old, or less than three - thousandths of the age of the Sun, Beta Pictoris is 75% more massive than our parent star. It is located about 60 light - years away towards the constellation of Pictor (the Painter) and is one of the best - known examples of a star surrounded by a dusty debris disc. Earlier observations showed a warp of the disc, a secondary inclined disc and comets falling onto the star, all indirect, but tell - tale signs that strongly suggested the presence of a massive planet. Observations done with the NACO instrument on Eso's Very Large Telescope in 2003, 2008 and 2009, have proven the presence of a planet around Beta Pictoris. It is located at a distance between 8 and 15 times the Earth - Sun separation -

Beta Pictoris b - Artist's view of Beta Pictoris b, a giant exoplanet with a mass equivalent to 9 times the mass of Jupiter orbiting the star Beta Pictoris. This artist's impression shows how the planet inside the disc of Beta Pictoris may look. Only 12 million years old, or less than three - thousandths of the age of the Sun, Beta Pictoris is 75% more massive than our parent star. It is located about 60 light - years away towards the constellation of Pictor (the Painter) and is one of the best - known examples of a star surrounded by a dusty debris disc. Earlier observations showed a warp of the disc, a secondary inclined disc and comets falling onto the star, all indirect, but tell - tale signs that strongly suggested the presence of a massive planet. Observations done with the NACO instrument on Eso's Very Large Telescope in 2003, 2008 and 2009, have proven the presence of a planet around Beta Pictoris. It is located at a distance between 8 and 15 times the Earth - Sun separation -

PIX4574181

Nebulae NGC 6334 and NGC 6357 in Scorpio - Nebulae NGC 6334 and NGC 6357 in Scorpius - These nebulae are located approximately 5500 years - light from Earth. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. The star - forming nebulae NGC 6334 and NGC 6357 show no evidence of a blue component in their colour - indeed, the blue - light plate used in these 3 - colour pictures had no nebulous image at all - nor is there any obvious sign of the bright blue stars normally found in these objects. They are excellent examples of the phenomenon known as 'interstellar reddening', the selective removal of blue light by minute particles of dust in the line of sight. This accounts for both the ruddy hue and apparent absence of blue stars. The hot stars are present but only some of the red part of their light is seen so they are not conspicuous. These nebulae are quite nearby (5500 light years) but located close to the Galactic plane and are buried in the dust of the Milky Way. Ca

Nebulae NGC 6334 and NGC 6357 in Scorpio - Nebulae NGC 6334 and NGC 6357 in Scorpius - These nebulae are located approximately 5500 years - light from Earth. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. The star - forming nebulae NGC 6334 and NGC 6357 show no evidence of a blue component in their colour - indeed, the blue - light plate used in these 3 - colour pictures had no nebulous image at all - nor is there any obvious sign of the bright blue stars normally found in these objects. They are excellent examples of the phenomenon known as 'interstellar reddening', the selective removal of blue light by minute particles of dust in the line of sight. This accounts for both the ruddy hue and apparent absence of blue stars. The hot stars are present but only some of the red part of their light is seen so they are not conspicuous. These nebulae are quite nearby (5500 light years) but located close to the Galactic plane and are buried in the dust of the Milky Way. Ca

PIX4619350

Men in a boat near two Dutch ships, 1652 (oil on panel)

Men in a boat near two Dutch ships, 1652 (oil on panel)

Sillemans, Experiens (fl.c.1650)

MMM7340545

Nebula of the cone NGC 2264 in the Unicorn - Nebulae in Monoceros - The nebula of the Cone below, is a region about 2600 years - light from the Earth. The bright star in the high center is S Monocerotis, a star of magnitude 4.7. Nests in these gas clouds, the Christmas tree, a cluster of young stars whose shape evokes a Christmas tree. This wide - field image of the Christmas Tree Cluster was taken at the National Science Foundation's 0.9 - meter telescope on Kitt Peak with the NOAO Mosaic CCD camera. Also known as NGC2264, it is an open cluster of stars embedded in a diffuse nebula. It is located in the constellation of Monoceros, the Unicorn. The image also contains two famous nebula. At the bottom center of the image is the Cone Nebula, and to the upper left is the Fox Fur Nebula. The bright star just above the center of the image is known as S Mon. The gentle arcs in orange and blue near the center of the image are Herbig Haro objects, jets of gas from protostars embedded in the ne

Nebula of the cone NGC 2264 in the Unicorn - Nebulae in Monoceros - The nebula of the Cone below, is a region about 2600 years - light from the Earth. The bright star in the high center is S Monocerotis, a star of magnitude 4.7. Nests in these gas clouds, the Christmas tree, a cluster of young stars whose shape evokes a Christmas tree. This wide - field image of the Christmas Tree Cluster was taken at the National Science Foundation's 0.9 - meter telescope on Kitt Peak with the NOAO Mosaic CCD camera. Also known as NGC2264, it is an open cluster of stars embedded in a diffuse nebula. It is located in the constellation of Monoceros, the Unicorn. The image also contains two famous nebula. At the bottom center of the image is the Cone Nebula, and to the upper left is the Fox Fur Nebula. The bright star just above the center of the image is known as S Mon. The gentle arcs in orange and blue near the center of the image are Herbig Haro objects, jets of gas from protostars embedded in the ne

PIX4618652

Nebula NGC 3372 in the Carene - The Eta Carinae Nebula and Trumpler 14 - The Carene nebula is located about 7000 years from the Earth. It is home to many hot stars, including the star Eta Carinae (lower left, the brightest star in the picture). Top right is a cluster of young stars, Trumpler 14. Image obtained by Siding Spring's 3.9m telescope. In the small region pictured here are three of the brightest stars known in our Galaxy, each a million times more luminous than the Sun. To the left of the picture is an even more extreme star, Eta Carinae itself, shrouded in a small bright irregular nebula of its own making. In the upper right of the photograph is Trumpler 14, a cluster of very young stars which appears to be associated with a number of bright - edged 'elephant trunk' dust lanes, typical of star - forming regions. All these objects and most of the bright stars scattered across the face of the nebula are together in space at a distance of about 7000 light years. Despite this dis

Nebula NGC 3372 in the Carene - The Eta Carinae Nebula and Trumpler 14 - The Carene nebula is located about 7000 years from the Earth. It is home to many hot stars, including the star Eta Carinae (lower left, the brightest star in the picture). Top right is a cluster of young stars, Trumpler 14. Image obtained by Siding Spring's 3.9m telescope. In the small region pictured here are three of the brightest stars known in our Galaxy, each a million times more luminous than the Sun. To the left of the picture is an even more extreme star, Eta Carinae itself, shrouded in a small bright irregular nebula of its own making. In the upper right of the photograph is Trumpler 14, a cluster of very young stars which appears to be associated with a number of bright - edged 'elephant trunk' dust lanes, typical of star - forming regions. All these objects and most of the bright stars scattered across the face of the nebula are together in space at a distance of about 7000 light years. Despite this dis

PIX4618903

Heart of the nebula NGC 3372 in the Carene - Eta Carinae and the Keyhole Nebula - The nebula of the Carene is located about 7000 years - light from the Earth. It is home to many hot stars, including the star Eta Carinae visible in the centre left of the image. Eta Carinae is a supermassive star (100 to 150 times the mass of the Sun). Image obtained by Siding Spring's 3.9m telescope. This wonderfully complex region at the heart of the NGC 3372 nebula was first described in detail by Sir John Herschel in 1838. He saw the bright circular shell visible in the upper part of the picture extending to the south to form a keyhole - shaped nebula. This luminous outline is no longer seen and the southern extension appears only as a dark dust cloud. It seems that the curious, explosively variable star Eta Carinae has enveloped itself in a cocoon of obscuring matter in the years since Herschel's observations and light from the star is no longer able to illuminate the rim of the dust cloud. The nebu

Heart of the nebula NGC 3372 in the Carene - Eta Carinae and the Keyhole Nebula - The nebula of the Carene is located about 7000 years - light from the Earth. It is home to many hot stars, including the star Eta Carinae visible in the centre left of the image. Eta Carinae is a supermassive star (100 to 150 times the mass of the Sun). Image obtained by Siding Spring's 3.9m telescope. This wonderfully complex region at the heart of the NGC 3372 nebula was first described in detail by Sir John Herschel in 1838. He saw the bright circular shell visible in the upper part of the picture extending to the south to form a keyhole - shaped nebula. This luminous outline is no longer seen and the southern extension appears only as a dark dust cloud. It seems that the curious, explosively variable star Eta Carinae has enveloped itself in a cocoon of obscuring matter in the years since Herschel's observations and light from the star is no longer able to illuminate the rim of the dust cloud. The nebu

PIX4618913

Nebula NGC 3372 in the Carene in fake colors - NGC 3372 Carina nebula in narrow band - The nebula of the Carene is located about 8000 years - light from Earth. It is home to many hot stars, including the massive star Eta Carinae in the centre of the nebula. Image obtained by the 1.2m Schmidt UK Telescope of Siding Spring through 3 different filters that highlight oxygen, hydrogen, and sulfur. Although no bright naked - eye stars are associated with the Carina nebula now, 150 years ago there blazed forth here one of the most unusual and peculiar stars ever seen. The star is known as Eta Carinae and for a few months in 1843 it was the second or third brightest star in the sky. Since then it has faded and is today about 1000 times fainter than it was at its brightest as the nebula it created during its outburst has cooled and become opaque. The whole region around Eta Carinae is rich in hot stars of which Eta is an extreme example and it is their combined radiation that produces the spect

Nebula NGC 3372 in the Carene in fake colors - NGC 3372 Carina nebula in narrow band - The nebula of the Carene is located about 8000 years - light from Earth. It is home to many hot stars, including the massive star Eta Carinae in the centre of the nebula. Image obtained by the 1.2m Schmidt UK Telescope of Siding Spring through 3 different filters that highlight oxygen, hydrogen, and sulfur. Although no bright naked - eye stars are associated with the Carina nebula now, 150 years ago there blazed forth here one of the most unusual and peculiar stars ever seen. The star is known as Eta Carinae and for a few months in 1843 it was the second or third brightest star in the sky. Since then it has faded and is today about 1000 times fainter than it was at its brightest as the nebula it created during its outburst has cooled and become opaque. The whole region around Eta Carinae is rich in hot stars of which Eta is an extreme example and it is their combined radiation that produces the spect

PIX4619010

Nebula NGC 3603 in Carene - Star formation region NGC 3603 in Carina - NGC 3603 is located about 7000 years - light from Earth in the constellation Carene. Within this nebula, a cluster of massive stars, Wolf - Rayet stars. Image obtained by Siding Spring's 3.9m telescope. Although stars are well known to form in clusters, most of the stars in the young groups we know of in our own galaxy are well separated in space. In NGC 3603 the stars are remarkably close together. Moreover, many of the stars in this compact constellation are Wolf - Rayet stars, extremely hot, massive objects, rarely found in such profusion in clusters. Exactly why some clusters form massive stars and others do not is a hot topic in astronomy, so this cluster and its environment has been extensively studied. This curious collection of young objects is, as far as we know, unique in our galaxy, though the enigmatic object at the centre of the Tarantula Nebula in the Large Magellanic Cloud is now known to be a similar

Nebula NGC 3603 in Carene - Star formation region NGC 3603 in Carina - NGC 3603 is located about 7000 years - light from Earth in the constellation Carene. Within this nebula, a cluster of massive stars, Wolf - Rayet stars. Image obtained by Siding Spring's 3.9m telescope. Although stars are well known to form in clusters, most of the stars in the young groups we know of in our own galaxy are well separated in space. In NGC 3603 the stars are remarkably close together. Moreover, many of the stars in this compact constellation are Wolf - Rayet stars, extremely hot, massive objects, rarely found in such profusion in clusters. Exactly why some clusters form massive stars and others do not is a hot topic in astronomy, so this cluster and its environment has been extensively studied. This curious collection of young objects is, as far as we know, unique in our galaxy, though the enigmatic object at the centre of the Tarantula Nebula in the Large Magellanic Cloud is now known to be a similar

PIX4619216

Planetary nebula NGC 2899 dans les Voiles - A distorted planetary nebula, NGC 2899 - This nebula is located about 3000 years from Earth. Image obtained by the 3.9m telescope of Siding Spring Planetary nebulae present a wide variety of forms on the sky, partly because of the random orientation of their parent stars but also because the nebulae themselves can have quite different intrinsic shapes. Theories about the shapes of planetaries range from the influence of binary companions to the central star to the distribution of material around the stars during its red giant phase, before the final outburst. Whatever the mechanism, most planetaries are symmetrical about one or more axes and only rarely do they appear curved like NGC 2899. A possible explanation is that the star from which the nebula was ejected had a large proper motion through space. The resulting nebula has the same velocity but vastly lower density than the star so is distorted by its encounter with the tenuous interstell

Planetary nebula NGC 2899 dans les Voiles - A distorted planetary nebula, NGC 2899 - This nebula is located about 3000 years from Earth. Image obtained by the 3.9m telescope of Siding Spring Planetary nebulae present a wide variety of forms on the sky, partly because of the random orientation of their parent stars but also because the nebulae themselves can have quite different intrinsic shapes. Theories about the shapes of planetaries range from the influence of binary companions to the central star to the distribution of material around the stars during its red giant phase, before the final outburst. Whatever the mechanism, most planetaries are symmetrical about one or more axes and only rarely do they appear curved like NGC 2899. A possible explanation is that the star from which the nebula was ejected had a large proper motion through space. The resulting nebula has the same velocity but vastly lower density than the star so is distorted by its encounter with the tenuous interstell

PIX4622995

Nebulae of the horse's head and M42 in Orion - Horsehead and Orion nebulae - Dark Nebula of the horse's head (IC434 - B33). Further down, the large Orion nebula (M42) vast star-forming region. These nebulae are located 1500 years of light from Earth. Image obtained from the 1.2m Schmidt telescope of Siding Spring. This wide - angle picture of the Orion region has been made to reveal the extensive network of very faint filaments which are traceable over most of the constellation. These faint features are optical evidence of a substantial dark cloud of molecular gas and dust which dominate at radio wavelengths. Where hot stars are closely associated with the molecular cloud, a bright nebula appears. By far the most conspicuous of these is the Orion Nebula, M42. This spectacular object is so bright that its light is reflected from filaments of the dark cloud some distance away. In contrast, the wisps of the Horsehead Nebula are much fainter but even here faint tendrils of nebulosity show

Nebulae of the horse's head and M42 in Orion - Horsehead and Orion nebulae - Dark Nebula of the horse's head (IC434 - B33). Further down, the large Orion nebula (M42) vast star-forming region. These nebulae are located 1500 years of light from Earth. Image obtained from the 1.2m Schmidt telescope of Siding Spring. This wide - angle picture of the Orion region has been made to reveal the extensive network of very faint filaments which are traceable over most of the constellation. These faint features are optical evidence of a substantial dark cloud of molecular gas and dust which dominate at radio wavelengths. Where hot stars are closely associated with the molecular cloud, a bright nebula appears. By far the most conspicuous of these is the Orion Nebula, M42. This spectacular object is so bright that its light is reflected from filaments of the dark cloud some distance away. In contrast, the wisps of the Horsehead Nebula are much fainter but even here faint tendrils of nebulosity show

PIX4617912

Tarantula (NGC 2070) in the LMC - The nebula around 30 Doradus (NGC 2070) in the LMC - The Tarantula Nebula (or 30 Bream) is the largest star-forming region of the Great Magellan Cloud. It is located 170,000 light years ago in the constellation Dorado (southern hemisphere). At the center of this nebula, the open cluster of R136 stars, clusters of hot and massive stars. Image obtained with Siding Spring's 3.9m telescope. The brightest cluster of stars in this picture was believed until recently to contain a single, uniquely massive object with the mass equivalent to 1000 suns, and was named as a star, 30 Doradus. Sophisticated image analysis techniques have been used to show that 30 Doradus is a very compact group of stars, many of which are massive, but not unimaginably so. The radiation from this star cluster is sufficient to excite a huge cloud of hydrogen gas in its vicinity so that it glows with its distinctive red colour. This picture is essentially a one minute exposure. A longer

Tarantula (NGC 2070) in the LMC - The nebula around 30 Doradus (NGC 2070) in the LMC - The Tarantula Nebula (or 30 Bream) is the largest star-forming region of the Great Magellan Cloud. It is located 170,000 light years ago in the constellation Dorado (southern hemisphere). At the center of this nebula, the open cluster of R136 stars, clusters of hot and massive stars. Image obtained with Siding Spring's 3.9m telescope. The brightest cluster of stars in this picture was believed until recently to contain a single, uniquely massive object with the mass equivalent to 1000 suns, and was named as a star, 30 Doradus. Sophisticated image analysis techniques have been used to show that 30 Doradus is a very compact group of stars, many of which are massive, but not unimaginably so. The radiation from this star cluster is sufficient to excite a huge cloud of hydrogen gas in its vicinity so that it glows with its distinctive red colour. This picture is essentially a one minute exposure. A longer

PIX4618266

Comet C2013US10 Catalina, 2015 (digital photo)

Comet C2013US10 Catalina, 2015 (digital photo)

Rhemann, Gerald (21st century)

MMM7340356

M87 elliptical galaxy in Virgo - M87 elliptical galaxy in Virgo - The M87 galaxy (NGC 4486) is located about 60 million years ago - light from Earth, in the heart of the Virgin's cluster. M87 is the brightest radio source in the constellation, it is also called Virgo A. Image made with Siding Spring's 3.9m telescope. Messier 87 (NGC 4486) lies near the centre of the nearby cluster of galaxies in Virgo at a distance of about 60 million light years. Although the physical boundaries of elliptical galaxies are not well defined, their mass can be, and by any standards M87 is enormous. It contains several thousand billion stars. Associated with this giant galaxy are large numbers of globular clusters, visible in this photograph as the cloud of slightly fuzzy objects around it. Like all ellipticals, M 87 is composed mainly of old stars and is largely devoid of the materials needed to make new ones. The galaxy is not inert however; high energy X - rays have been detected from an extensive oute

M87 elliptical galaxy in Virgo - M87 elliptical galaxy in Virgo - The M87 galaxy (NGC 4486) is located about 60 million years ago - light from Earth, in the heart of the Virgin's cluster. M87 is the brightest radio source in the constellation, it is also called Virgo A. Image made with Siding Spring's 3.9m telescope. Messier 87 (NGC 4486) lies near the centre of the nearby cluster of galaxies in Virgo at a distance of about 60 million light years. Although the physical boundaries of elliptical galaxies are not well defined, their mass can be, and by any standards M87 is enormous. It contains several thousand billion stars. Associated with this giant galaxy are large numbers of globular clusters, visible in this photograph as the cloud of slightly fuzzy objects around it. Like all ellipticals, M 87 is composed mainly of old stars and is largely devoid of the materials needed to make new ones. The galaxy is not inert however; high energy X - rays have been detected from an extensive oute

PIX4611461

Globular cluster 47 Toucan - The globular cluster 47 Tucanae NGC 104 - The globular cluster 47 Toucan (or NGC 104) is visible to the naked eye from the southern hemisphere. Located about 15000 years ago - light it contains several million stars, some of which are among the oldest stars known today. Image obtained from the 3.9m telescope of Siding Spring, Australia. Among the many spectacular objects in the southern skies are two magnificent naked - eye globular clusters, omega Centauri and 47 Tucanae. These ancient cities of stars are captives of the Milky Way but were formed long before our Galaxy assumed its present shape, indeed these clusters have some of the oldest known stars. 47 Tuc is about 15,000 light years distant and contains several million stars, as many as some minor galaxies. The crowded central region leads to occasional stellar encounters and it is in 47 Tuc that rapidly - spinning pulsars have been discovered by radio astronomers. Although the light of globular clust

Globular cluster 47 Toucan - The globular cluster 47 Tucanae NGC 104 - The globular cluster 47 Toucan (or NGC 104) is visible to the naked eye from the southern hemisphere. Located about 15000 years ago - light it contains several million stars, some of which are among the oldest stars known today. Image obtained from the 3.9m telescope of Siding Spring, Australia. Among the many spectacular objects in the southern skies are two magnificent naked - eye globular clusters, omega Centauri and 47 Tucanae. These ancient cities of stars are captives of the Milky Way but were formed long before our Galaxy assumed its present shape, indeed these clusters have some of the oldest known stars. 47 Tuc is about 15,000 light years distant and contains several million stars, as many as some minor galaxies. The crowded central region leads to occasional stellar encounters and it is in 47 Tuc that rapidly - spinning pulsars have been discovered by radio astronomers. Although the light of globular clust

PIX4564310

Exoplanete GJ 1214 b - Exoplanet GJ 1214 b - Illustration showing the transit of the extrasolar planet GJ 1214 b in front of its star, the red dwarf GJ 1214, in the constellation Ophiuchus. GJ 1214 b is a super Earth, six times the mass of the Earth, which has an atmosphere but is too inhospitable to shelter life as we know it. This artist's impression shows how the super - Earth surrounding the nearby star GJ1214 may look. Discovered by the Mearth project and investigated further by the HARPS spectrograph on ESO's 3.6 - metre telescope at La Silla, GJ1214b is the second super - Earth exoplanet for which astronomers have determined the mass and radius, giving vital clues about its structure. It is also the first super - Earth around which an atmosphere has been found. The exoplanet, orbiting a small star only 40 light - years away from us, thus opens dramatic new perspectives in the quest for habitable worlds. The planet, GJ1214b, has a mass about six times that of Earth and its interi

Exoplanete GJ 1214 b - Exoplanet GJ 1214 b - Illustration showing the transit of the extrasolar planet GJ 1214 b in front of its star, the red dwarf GJ 1214, in the constellation Ophiuchus. GJ 1214 b is a super Earth, six times the mass of the Earth, which has an atmosphere but is too inhospitable to shelter life as we know it. This artist's impression shows how the super - Earth surrounding the nearby star GJ1214 may look. Discovered by the Mearth project and investigated further by the HARPS spectrograph on ESO's 3.6 - metre telescope at La Silla, GJ1214b is the second super - Earth exoplanet for which astronomers have determined the mass and radius, giving vital clues about its structure. It is also the first super - Earth around which an atmosphere has been found. The exoplanet, orbiting a small star only 40 light - years away from us, thus opens dramatic new perspectives in the quest for habitable worlds. The planet, GJ1214b, has a mass about six times that of Earth and its interi

PIX4573892

The Magnificent Omega Centauri, 2014 (digital photo)

The Magnificent Omega Centauri, 2014 (digital photo)

Bobillo, Ignacio Diaz (20th-21st century)

MMM7340386

Inverted colours of the boundary between Mare Serenitatis and Mare Tranquilitatis, 2017 (digital photo)

Inverted colours of the boundary between Mare Serenitatis and Mare Tranquilitatis, 2017 (digital photo)

Borrell, Jordi Delpeix (21st century)

MMM7340397

Horsehead Nebula (B33) in Orion - Horsehead nebula in Orion - The horse head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emission nebula about 1500 years - light of the Earth in the constellation Orion. Lower left is the reflexion nebula, NGC 2023. This curious dark nebula is one of the best - known images in astronomy, probably because of its chance likeness to a recognisable form. The horse - head shape is an extension of a large cloud of dust which fills the lower part (east) of the picture and hides the light of stars beyond. The outer surface of the dusty gas (IC 434) runs roughly north - south and is illuminated by sigma Orionis (off the top of the picture) which causes the hydrogen there to fluoresce, outlining the horse - head shape. The diffuse haze to the left of the image (north) is scattered light from the bright star zeta Orionis. Though conspicuous here, the Horsehead is very difficult to see visually, even with a large telescope. A bright star is

Horsehead Nebula (B33) in Orion - Horsehead nebula in Orion - The horse head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emission nebula about 1500 years - light of the Earth in the constellation Orion. Lower left is the reflexion nebula, NGC 2023. This curious dark nebula is one of the best - known images in astronomy, probably because of its chance likeness to a recognisable form. The horse - head shape is an extension of a large cloud of dust which fills the lower part (east) of the picture and hides the light of stars beyond. The outer surface of the dusty gas (IC 434) runs roughly north - south and is illuminated by sigma Orionis (off the top of the picture) which causes the hydrogen there to fluoresce, outlining the horse - head shape. The diffuse haze to the left of the image (north) is scattered light from the bright star zeta Orionis. Though conspicuous here, the Horsehead is very difficult to see visually, even with a large telescope. A bright star is

PIX4622095

Spiral Galaxy NGC 1566 in the Dorado - The Seyfert Galaxy NGC 1566 - NGC 1566 is a spiral galaxy located about 50 million years ago - light. Its core is very bright. It is an active galaxy called Seyfert, which probably houses a black hole in its heart. Image made with Siding Spring's 3.9m telescope. NGC 1566 is the brightest member of a nearby group of galaxies in Dorado and is at a distance of about 50 million light years. It has beautifully symmetrical, tightly - wound spiral arms, which on deep images appear to almost encircle the galaxy. This striking galaxy is also of interest because it has a very luminous nucleus which has many of the characteristics of a quasar, though it is much less energetic. Galaxies of this type are known as Seyfert galaxies, after Carl Seyfert who first recognised their peculiar nature in 1943. The active region at the centre of NGC 1566 has recently been found to vary on a timescale of less than a month, which indicates that it is extremely compact. Spe

Spiral Galaxy NGC 1566 in the Dorado - The Seyfert Galaxy NGC 1566 - NGC 1566 is a spiral galaxy located about 50 million years ago - light. Its core is very bright. It is an active galaxy called Seyfert, which probably houses a black hole in its heart. Image made with Siding Spring's 3.9m telescope. NGC 1566 is the brightest member of a nearby group of galaxies in Dorado and is at a distance of about 50 million light years. It has beautifully symmetrical, tightly - wound spiral arms, which on deep images appear to almost encircle the galaxy. This striking galaxy is also of interest because it has a very luminous nucleus which has many of the characteristics of a quasar, though it is much less energetic. Galaxies of this type are known as Seyfert galaxies, after Carl Seyfert who first recognised their peculiar nature in 1943. The active region at the centre of NGC 1566 has recently been found to vary on a timescale of less than a month, which indicates that it is extremely compact. Spe

PIX4609942

Tarantula Nebula (NGC 2070) in the Sea bream - Around the Tarantula nebula in the Large Magellanic Cloud - The Tarantula Nebula (or 30 Bream bream) is the largest star-forming region of the Great Magellan Cloud. It is located 170,000 light years ago in the constellation Dorado (southern hemisphere). At the center of this nebula, the open cluster of R136 stars, clusters of hot and massive stars. Mosaic of 14 images, 70 hours of cumulative poses. Known as the Tarantula Nebula for its spidery appearance, the 30 Doradus complex is a huge stellar factory. It is the largest emission nebula in the sky, and can be seen far down in the southern sky at a distance of about 170,000 light - years, in the southern constellation Dorado. It is part of one of the Milky Way's neighbouring galaxies, the Large Magellanic Cloud. The Tarantula Nebula is thought to contain more than half a million times the mass of the Sun in gas and this vast, blazing labyrinth hosts some of the most massive stars known. Su

Tarantula Nebula (NGC 2070) in the Sea bream - Around the Tarantula nebula in the Large Magellanic Cloud - The Tarantula Nebula (or 30 Bream bream) is the largest star-forming region of the Great Magellan Cloud. It is located 170,000 light years ago in the constellation Dorado (southern hemisphere). At the center of this nebula, the open cluster of R136 stars, clusters of hot and massive stars. Mosaic of 14 images, 70 hours of cumulative poses. Known as the Tarantula Nebula for its spidery appearance, the 30 Doradus complex is a huge stellar factory. It is the largest emission nebula in the sky, and can be seen far down in the southern sky at a distance of about 170,000 light - years, in the southern constellation Dorado. It is part of one of the Milky Way's neighbouring galaxies, the Large Magellanic Cloud. The Tarantula Nebula is thought to contain more than half a million times the mass of the Sun in gas and this vast, blazing labyrinth hosts some of the most massive stars known. Su

R. Gendler

PIX4618276

Horsehead Nebula (B33) in Orion - Horsehead nebula in Orion - The horse head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emission nebula about 1500 years - light of the Earth in the constellation Orion. Lower left is the reflexion nebula, NGC 2023. This curious dark nebula is one of the best - known images in astronomy, probably because of its chance likeness to a recognisable form. The horse - head shape is an extension of a large cloud of dust which fills the lower part (east) of the picture and hides the light of stars beyond. The outer surface of the dusty gas (IC 434) runs roughly north - south and is illuminated by sigma Orionis (off the top of the picture) which causes the hydrogen there to fluoresce, outlining the horse - head shape. The diffuse haze to the left of the image (north) is scattered light from the bright star zeta Orionis. Though conspicuous here, the Horsehead is very difficult to see visually, even with a large telescope. A bright star is

Horsehead Nebula (B33) in Orion - Horsehead nebula in Orion - The horse head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emission nebula about 1500 years - light of the Earth in the constellation Orion. Lower left is the reflexion nebula, NGC 2023. This curious dark nebula is one of the best - known images in astronomy, probably because of its chance likeness to a recognisable form. The horse - head shape is an extension of a large cloud of dust which fills the lower part (east) of the picture and hides the light of stars beyond. The outer surface of the dusty gas (IC 434) runs roughly north - south and is illuminated by sigma Orionis (off the top of the picture) which causes the hydrogen there to fluoresce, outlining the horse - head shape. The diffuse haze to the left of the image (north) is scattered light from the bright star zeta Orionis. Though conspicuous here, the Horsehead is very difficult to see visually, even with a large telescope. A bright star is

PIX4622023

Nebula of the horse's head in Orion (IC 434) - The Horsehead is located in the constellation of Orion, slightly below the left - most star of the three that form the Hunter's belt. It is part of a vast molecular cloud of dust and gas that includes the Great Orion Nebula and extends throughout the entire constellation as well. It was first seen through photographs taken by E. Pickering in January 1900. The red coloration is the result of glowing hydrogen gas located primarily behind the formation. Here, we see the Horsehead as it appeared 1,500 years ago, due to distance and the time it takes light to travel. The bright complex of dust and gas below the Horsehead reflects the light given off by the bright star near it's center and is one of the brightest examples of reflection nebulae in the northern sky. The central star is surrounded with a thin shell of hydrogen that glows red by emitting it's own light in a rare example of a unique process called vibrational fluorescence. There are

Nebula of the horse's head in Orion (IC 434) - The Horsehead is located in the constellation of Orion, slightly below the left - most star of the three that form the Hunter's belt. It is part of a vast molecular cloud of dust and gas that includes the Great Orion Nebula and extends throughout the entire constellation as well. It was first seen through photographs taken by E. Pickering in January 1900. The red coloration is the result of glowing hydrogen gas located primarily behind the formation. Here, we see the Horsehead as it appeared 1,500 years ago, due to distance and the time it takes light to travel. The bright complex of dust and gas below the Horsehead reflects the light given off by the bright star near it's center and is one of the brightest examples of reflection nebulae in the northern sky. The central star is surrounded with a thin shell of hydrogen that glows red by emitting it's own light in a rare example of a unique process called vibrational fluorescence. There are

R. Jay GaBany

PIX4622024

The center of our galaxy, the milky way - The center of our galaxy, the milky way - This billion pixel mosaic shows the central region of our galaxy, the Lactee Way. The 52 assembled images cover an area that extends from Sagittarius (with the galactic center and nebulae M8 and M20) on the left, to the Scorpio, with the star Antares and the colored cloud of Rho Ophiuchus on the right. Image obtained with a Takahashi FSQ 106 Ed bezel at Cerro Paranal Observatory in Chile; 200 hours of poses. This image is a 1 billion pixel RGB mosaic of the galactic center region (340 million pixels in each R, V and B color). It shows the region spanning from Sagittarius (with the Milky Way center and M8/M20 area on the left) to Scorpius (with colorful Antares and Rho Ophiuchus region on the right) and cat paw nebula (red nebula at the bottom). This mosaic was assembled from 52 different sky fields made from 1200 individual images and 200 hours total exposure time, final image size is 24000x14000 pixels

The center of our galaxy, the milky way - The center of our galaxy, the milky way - This billion pixel mosaic shows the central region of our galaxy, the Lactee Way. The 52 assembled images cover an area that extends from Sagittarius (with the galactic center and nebulae M8 and M20) on the left, to the Scorpio, with the star Antares and the colored cloud of Rho Ophiuchus on the right. Image obtained with a Takahashi FSQ 106 Ed bezel at Cerro Paranal Observatory in Chile; 200 hours of poses. This image is a 1 billion pixel RGB mosaic of the galactic center region (340 million pixels in each R, V and B color). It shows the region spanning from Sagittarius (with the Milky Way center and M8/M20 area on the left) to Scorpius (with colorful Antares and Rho Ophiuchus region on the right) and cat paw nebula (red nebula at the bottom). This mosaic was assembled from 52 different sky fields made from 1200 individual images and 200 hours total exposure time, final image size is 24000x14000 pixels

Stephane Guisard

PIX4636007

Uranus - Illustration - The planet Uranus and its system of rings. This image suggests how Uranus might look from a position in space several hundred thousand miles above its south pole. Like Saturn and Jupiter, Uranus is a Gas Giant, composed primarily of hydrogen and helium gases surrounding a relatively small, dense core of molten rock and metal. Its bluish color is due to the presence of methane in its upper atmosphere. Also like Saturn and Jupiter, Uranus has rings. However Uranus' rings are over three orders of magnitude dimmer than Saturn's; where Saturn's rings are almost white, Uranus' rings are more like the color of charcoal. Uranus 'rings are so dim that they went undetected from 1781, when the English astronomer William Herschel first observed Uranus through a telescope, until 1977 when astronomers watched as a star passing behind Uranus appeared to blink several times, caused by the ten rings surrounding the planet. One bizarre aspect of Uranus is that its axis of rotatio

Uranus - Illustration - The planet Uranus and its system of rings. This image suggests how Uranus might look from a position in space several hundred thousand miles above its south pole. Like Saturn and Jupiter, Uranus is a Gas Giant, composed primarily of hydrogen and helium gases surrounding a relatively small, dense core of molten rock and metal. Its bluish color is due to the presence of methane in its upper atmosphere. Also like Saturn and Jupiter, Uranus has rings. However Uranus' rings are over three orders of magnitude dimmer than Saturn's; where Saturn's rings are almost white, Uranus' rings are more like the color of charcoal. Uranus 'rings are so dim that they went undetected from 1781, when the English astronomer William Herschel first observed Uranus through a telescope, until 1977 when astronomers watched as a star passing behind Uranus appeared to blink several times, caused by the ten rings surrounding the planet. One bizarre aspect of Uranus is that its axis of rotatio

Walter B Myers

PIX4634800

Neptune - Illustration - Neptune's Great Dark Spot - Illustration - Artist's view of Neptune with its ring system and large dark spot observed by the Voyager 2 probe in 1989. This is how Neptune's Great Dark Spot and rings may have looked in 1989 from a position just beneath Neptune's ring plane. The outermost Adams ring is near the top of the frame, and beneath that is the much broader and diffuse Lassell ring. Further in toward Neptune and abutting the Lassell ring is the thin Le Verrier ring, and beyond that is the diffuse Galle ring. The Great Dark Spot is believed to be a storm similar to, but only half the size of, Jupiter's Great Red Spot. While Jupiter's Great Red Spot has been raging for at least 400 years, subsequent observations of Neptune's Great Dark Spot in 1994 by the Hubble Space Telescope revealed that this storm has since disappeared. The Great Dark Spot was a very dynamic weather system, generating massive, white clouds similar to high - altitude cirrus clouds on Ear

Neptune - Illustration - Neptune's Great Dark Spot - Illustration - Artist's view of Neptune with its ring system and large dark spot observed by the Voyager 2 probe in 1989. This is how Neptune's Great Dark Spot and rings may have looked in 1989 from a position just beneath Neptune's ring plane. The outermost Adams ring is near the top of the frame, and beneath that is the much broader and diffuse Lassell ring. Further in toward Neptune and abutting the Lassell ring is the thin Le Verrier ring, and beyond that is the diffuse Galle ring. The Great Dark Spot is believed to be a storm similar to, but only half the size of, Jupiter's Great Red Spot. While Jupiter's Great Red Spot has been raging for at least 400 years, subsequent observations of Neptune's Great Dark Spot in 1994 by the Hubble Space Telescope revealed that this storm has since disappeared. The Great Dark Spot was a very dynamic weather system, generating massive, white clouds similar to high - altitude cirrus clouds on Ear

Walter B Myers

PIX4624042

Nebula NGC 6334 in the Scorpion - The 'reddened' nebulosity of NGC 6334 - The nebula NGC 6334 is located about 5500 years - light from Earth. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. The star - forming nebula NGC 6334 shows no evidence of a blue component in their colour - indeed, the blue - light plate used in these 3 - colour pictures had no nebulous image at all - nor is there any obvious sign of the bright blue stars normally found in these objects. They are excellent examples of the phenomenon known as 'interstellar reddening', the selective removal of blue light by minute particles of dust in the line of sight. This accounts for both the ruddy hue and apparent absence of blue stars. The hot stars are present but only some of the red part of their light is seen so they are not conspicuous. This nebula is quite nearby (5500 light years) but located close to the Galactic plane and are buried in the dust of the Milky Way. Careful measurement of the colour

Nebula NGC 6334 in the Scorpion - The 'reddened' nebulosity of NGC 6334 - The nebula NGC 6334 is located about 5500 years - light from Earth. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. The star - forming nebula NGC 6334 shows no evidence of a blue component in their colour - indeed, the blue - light plate used in these 3 - colour pictures had no nebulous image at all - nor is there any obvious sign of the bright blue stars normally found in these objects. They are excellent examples of the phenomenon known as 'interstellar reddening', the selective removal of blue light by minute particles of dust in the line of sight. This accounts for both the ruddy hue and apparent absence of blue stars. The hot stars are present but only some of the red part of their light is seen so they are not conspicuous. This nebula is quite nearby (5500 light years) but located close to the Galactic plane and are buried in the dust of the Milky Way. Careful measurement of the colour

PIX4619360

Globular cluster 47 Toucan - The globular cluster 47 Tucanae NGC 104 - The globular cluster 47 Toucan (or NGC 104) is visible to the naked eye from the southern hemisphere. Located about 15000 years ago - light it contains several million stars, some of which are among the oldest stars known today. Image obtained from the 3.9m telescope of Siding Spring, Australia. Among the many spectacular objects in the southern skies are two magnificent naked - eye globular clusters, omega Centauri and 47 Tucanae. These ancient cities of stars are captives of the Milky Way but were formed long before our Galaxy assumed its present shape, indeed these clusters have some of the oldest known stars. 47 Tuc is about 15,000 light years distant and contains several million stars, as many as some minor galaxies. The crowded central region leads to occasional stellar encounters and it is in 47 Tuc that rapidly - spinning pulsars have been discovered by radio astronomers. Although the light of globular clust

Globular cluster 47 Toucan - The globular cluster 47 Tucanae NGC 104 - The globular cluster 47 Toucan (or NGC 104) is visible to the naked eye from the southern hemisphere. Located about 15000 years ago - light it contains several million stars, some of which are among the oldest stars known today. Image obtained from the 3.9m telescope of Siding Spring, Australia. Among the many spectacular objects in the southern skies are two magnificent naked - eye globular clusters, omega Centauri and 47 Tucanae. These ancient cities of stars are captives of the Milky Way but were formed long before our Galaxy assumed its present shape, indeed these clusters have some of the oldest known stars. 47 Tuc is about 15,000 light years distant and contains several million stars, as many as some minor galaxies. The crowded central region leads to occasional stellar encounters and it is in 47 Tuc that rapidly - spinning pulsars have been discovered by radio astronomers. Although the light of globular clust

PIX4564306

Globular cluster NGC 6752 in the Peacock - Globular cluster NGC 6752 in Pavo - This cluster of stars is about 14,000 years old - light from Earth

Globular cluster NGC 6752 in the Peacock - Globular cluster NGC 6752 in Pavo - This cluster of stars is about 14,000 years old - light from Earth

PIX4565039

Tarantula Nebula (NGC 2070) in the Sea bream - Around the Tarantula nebula in the Large Magellanic Cloud - The Tarantula Nebula (or 30 Bream bream) is the largest star-forming region of the Great Magellan Cloud. It is located 170,000 light years ago in the constellation Dorado (southern hemisphere). At the center of this nebula, the open cluster of R136 stars, clusters of hot and massive stars. Mosaic of 14 images, 70 hours of cumulative poses. Known as the Tarantula Nebula for its spidery appearance, the 30 Doradus complex is a huge stellar factory. It is the largest emission nebula in the sky, and can be seen far down in the southern sky at a distance of about 170,000 light - years, in the southern constellation Dorado. It is part of one of the Milky Way's neighbouring galaxies, the Large Magellanic Cloud. The Tarantula Nebula is thought to contain more than half a million times the mass of the Sun in gas and this vast, blazing labyrinth hosts some of the most massive stars known. Su

Tarantula Nebula (NGC 2070) in the Sea bream - Around the Tarantula nebula in the Large Magellanic Cloud - The Tarantula Nebula (or 30 Bream bream) is the largest star-forming region of the Great Magellan Cloud. It is located 170,000 light years ago in the constellation Dorado (southern hemisphere). At the center of this nebula, the open cluster of R136 stars, clusters of hot and massive stars. Mosaic of 14 images, 70 hours of cumulative poses. Known as the Tarantula Nebula for its spidery appearance, the 30 Doradus complex is a huge stellar factory. It is the largest emission nebula in the sky, and can be seen far down in the southern sky at a distance of about 170,000 light - years, in the southern constellation Dorado. It is part of one of the Milky Way's neighbouring galaxies, the Large Magellanic Cloud. The Tarantula Nebula is thought to contain more than half a million times the mass of the Sun in gas and this vast, blazing labyrinth hosts some of the most massive stars known. Su

R. Gendler

PIX4618298

NGC 2264, S Monocerotis, Hubble Nebula and Trumpler 5 clusters - NGC 2261, 2264, the Cone nebula and Trumpler 5 - The Cone nebula on the left is a region H II located about 2600 years - light from Earth. The bright star on the top left is S Monocerotis, a star of magnitude 4.7. On the right, an open cluster of stars, Trumpler 5. Downstairs in the center, the Hubble nebula. Image obtained from the 1.2m Schmidt telescope of Siding Spring. The western end of the large constellation of Monoceros crossed by the Galactic plane and so is rich in the ingredients of star formation. Only five degrees south (not shown) is the beautiful Rosette nebula, also close to the Galactic plane. To the east (left) is the outline of the dark Cone nebula with its distinctive bright tip, apparently pointing to the star S Mon at the top (north) of the photograph. All around is faint nebulosity, hinting at star formation in the region. Around the dusty red nebula there are areas where the light from background s

NGC 2264, S Monocerotis, Hubble Nebula and Trumpler 5 clusters - NGC 2261, 2264, the Cone nebula and Trumpler 5 - The Cone nebula on the left is a region H II located about 2600 years - light from Earth. The bright star on the top left is S Monocerotis, a star of magnitude 4.7. On the right, an open cluster of stars, Trumpler 5. Downstairs in the center, the Hubble nebula. Image obtained from the 1.2m Schmidt telescope of Siding Spring. The western end of the large constellation of Monoceros crossed by the Galactic plane and so is rich in the ingredients of star formation. Only five degrees south (not shown) is the beautiful Rosette nebula, also close to the Galactic plane. To the east (left) is the outline of the dark Cone nebula with its distinctive bright tip, apparently pointing to the star S Mon at the top (north) of the photograph. All around is faint nebulosity, hinting at star formation in the region. Around the dusty red nebula there are areas where the light from background s

PIX4618768

Globular cluster 47 Toucan - The globular cluster 47 Tucanae, NGC 104 - The globular cluster 47 Toucan (or NGC 104) is visible to the naked eye from the southern hemisphere. Located about 15000 years ago - light it contains several million stars, some of which are among the oldest stars known today. Image obtained from the 3.9m telescope of Siding Spring, Australia. Among the many spectacular objects in the southern skies are two magnificent naked - eye globular clusters, omega Centauri and 47 Tucanae. These ancient cities of stars are captives of the Milky Way but were formed long before our Galaxy assumed its present shape, indeed these clusters have some of the oldest known stars. 47 Tuc is about 15,000 light years distant and contains several million stars, as many as some minor galaxies. The crowded central region leads to occasional stellar encounters and it is in 47 Tuc that rapidly - spinning pulsars have been discovered by radio astronomers. Although the light of globular clus

Globular cluster 47 Toucan - The globular cluster 47 Tucanae, NGC 104 - The globular cluster 47 Toucan (or NGC 104) is visible to the naked eye from the southern hemisphere. Located about 15000 years ago - light it contains several million stars, some of which are among the oldest stars known today. Image obtained from the 3.9m telescope of Siding Spring, Australia. Among the many spectacular objects in the southern skies are two magnificent naked - eye globular clusters, omega Centauri and 47 Tucanae. These ancient cities of stars are captives of the Milky Way but were formed long before our Galaxy assumed its present shape, indeed these clusters have some of the oldest known stars. 47 Tuc is about 15,000 light years distant and contains several million stars, as many as some minor galaxies. The crowded central region leads to occasional stellar encounters and it is in 47 Tuc that rapidly - spinning pulsars have been discovered by radio astronomers. Although the light of globular clus

PIX4564283

Martian dunes in Spring - March: Spring view of Dunes - Detail on sand dunes near the north pole of Mars. These dunes are covered with carbon dioxide gel during the Martian winter. In spring, dark streaks appear, sand flows caused by the degel. Image obtained by the HIRISE camera of the Mars Reconnaissance probe orbiter on April 7, 2008. HIRISE is a 50 cm telescope that observes visible and near infrared. Falling Material Kicks Up Cloud of Dust on Dunes. There is a vast region of sand dunes at high northern latitudes on Mars. In the winter, a layer of carbon dioxide ice covers the dunes, and in the spring as the sun warms the ice it evaporates. This is a very active process, and sand dislodged from the crests of the dunes cascades down, forming dark streaks. In thid image falling material has kicked up a small cloud of dust. The color of the ice surrounding adjacent streaks of material suggests that dust has settled on the ice at the bottom after similar events. Also discernible in thi

Martian dunes in Spring - March: Spring view of Dunes - Detail on sand dunes near the north pole of Mars. These dunes are covered with carbon dioxide gel during the Martian winter. In spring, dark streaks appear, sand flows caused by the degel. Image obtained by the HIRISE camera of the Mars Reconnaissance probe orbiter on April 7, 2008. HIRISE is a 50 cm telescope that observes visible and near infrared. Falling Material Kicks Up Cloud of Dust on Dunes. There is a vast region of sand dunes at high northern latitudes on Mars. In the winter, a layer of carbon dioxide ice covers the dunes, and in the spring as the sun warms the ice it evaporates. This is a very active process, and sand dislodged from the crests of the dunes cascades down, forming dark streaks. In thid image falling material has kicked up a small cloud of dust. The color of the ice surrounding adjacent streaks of material suggests that dust has settled on the ice at the bottom after similar events. Also discernible in thi

PIX4616482

Galaxy NGC 891 in Andromede - Edge - on spiral galaxy NGC 891 in Andromeda - Spiral galaxy seen by the slice located at a distance of 10 million years - light. This image was obtained with the Isaac Newton 2.5m telescope of La Palma. If we could view the Milky Way from a distance of about 30 million light years it would look something like NGC 891. But galaxies that look like this are quite rare because the chance alignment of the thin disk of a spiral galaxy with our line of sight is unusual. A few degrees either side of its orientation and NGC 891 would be just another highly inclined spiral galaxy. From this unusual vantage point we can see in NGC 891 the surprising narrowness of the obscuring dust lane, a dark, slightly irregular band across the galaxy. We also see that it is yellowish, confirming that it is dust, which absorbs blue light, as in the Milky Way. Also similar to the Milky Way is the prominent central 'bulge' corresponding to the rich star clouds in Sagittarius. Howeve

Galaxy NGC 891 in Andromede - Edge - on spiral galaxy NGC 891 in Andromeda - Spiral galaxy seen by the slice located at a distance of 10 million years - light. This image was obtained with the Isaac Newton 2.5m telescope of La Palma. If we could view the Milky Way from a distance of about 30 million light years it would look something like NGC 891. But galaxies that look like this are quite rare because the chance alignment of the thin disk of a spiral galaxy with our line of sight is unusual. A few degrees either side of its orientation and NGC 891 would be just another highly inclined spiral galaxy. From this unusual vantage point we can see in NGC 891 the surprising narrowness of the obscuring dust lane, a dark, slightly irregular band across the galaxy. We also see that it is yellowish, confirming that it is dust, which absorbs blue light, as in the Milky Way. Also similar to the Milky Way is the prominent central 'bulge' corresponding to the rich star clouds in Sagittarius. Howeve

PIX4609474

Artist view of Beta Pictoris b - Beta Pictoris b. Artwork: Artist's view of Beta Pictoris b, a giant exoplanet with a mass equivalent to 9 times the mass of Jupiter orbit around the star Beta Pictoris. This artist's impression shows how the planet inside the disc of Beta Pictoris may look. Only 12 million years old, or less than three-thousandths of the age of the Sun, Beta Pictoris is 75% more massive than our parent star. It is located about 60 light-years away towards the constellation of Pictor (the Painter) and is one of the best-known examples of a star surrounded by a dusty debris disc. Earlier observations showed a warp of the disc, a secondary inclined disc and comets falling onto the star, all indirect, but tell-tale signs that strongly suggested the presence of a massive planet. Observations done with the NACO instrument on Eso's Very Large Telescope in 2003, 2008 and 2009, have proven the presence of a planet around Beta Pictoris. It is located at a distance between 8 and 1

Artist view of Beta Pictoris b - Beta Pictoris b. Artwork: Artist's view of Beta Pictoris b, a giant exoplanet with a mass equivalent to 9 times the mass of Jupiter orbit around the star Beta Pictoris. This artist's impression shows how the planet inside the disc of Beta Pictoris may look. Only 12 million years old, or less than three-thousandths of the age of the Sun, Beta Pictoris is 75% more massive than our parent star. It is located about 60 light-years away towards the constellation of Pictor (the Painter) and is one of the best-known examples of a star surrounded by a dusty debris disc. Earlier observations showed a warp of the disc, a secondary inclined disc and comets falling onto the star, all indirect, but tell-tale signs that strongly suggested the presence of a massive planet. Observations done with the NACO instrument on Eso's Very Large Telescope in 2003, 2008 and 2009, have proven the presence of a planet around Beta Pictoris. It is located at a distance between 8 and 1

Miller, Ron (b.1947)

PIX4608449

Coeur de la nebula de la Lagoon dans le sagittarius/HST - This NASA Hubble Space Telescope (HST) image reveals a pair of one - half light - year long interstellar “” twisters”” in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 light - years away in the direction of the constellation Sagittarius. The central hot O type star, Herschel 36 (lower right), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Other hot stars, also present in the nebula, are ionizing the extended optical nebulosity. The ionizing radiation induces photo - evaporation of the surfaces of the clouds and drives away violent stellar winds tearing into the cool clouds. Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds, combined with the pressure of starlight, may produce strong horizontal shear to twist the clouds into their tornado - like appearanc

Coeur de la nebula de la Lagoon dans le sagittarius/HST - This NASA Hubble Space Telescope (HST) image reveals a pair of one - half light - year long interstellar “” twisters”” in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 light - years away in the direction of the constellation Sagittarius. The central hot O type star, Herschel 36 (lower right), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Other hot stars, also present in the nebula, are ionizing the extended optical nebulosity. The ionizing radiation induces photo - evaporation of the surfaces of the clouds and drives away violent stellar winds tearing into the cool clouds. Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds, combined with the pressure of starlight, may produce strong horizontal shear to twist the clouds into their tornado - like appearanc

PIX4619687

Coma cluster of galaxies Abell 1656 - Coma cluster of galaxies - The Comas cluster is a large cluster of galaxies, comprising several thousand galaxies. It is located more than 300 million light years ago in the constellation Coma Berenices (Berenice Hair). This photo from the Hubble Space Telescope shows part of the cluster of a brilliant spiral galaxy, IC 4040, in the top left, and many elliptical galaxies. Also known as Abell 1656, the Coma Cluster is over 300 million light - years away. The cluster, named after its parent constellation Coma Berenices, is near the Milky Way's north pole. This places the Coma Cluster in an area unobscured by dust and gas from the plane of the Milky Way, and easily visible by Earth viewers. This Hubble image consists of a section of the cluster that is roughly one - third of the way out from the center of the cluster. One bright spiral galaxy is visible in the upper left of the image. It is distinctly brighter and bluer than galaxies surrounding it. A

Coma cluster of galaxies Abell 1656 - Coma cluster of galaxies - The Comas cluster is a large cluster of galaxies, comprising several thousand galaxies. It is located more than 300 million light years ago in the constellation Coma Berenices (Berenice Hair). This photo from the Hubble Space Telescope shows part of the cluster of a brilliant spiral galaxy, IC 4040, in the top left, and many elliptical galaxies. Also known as Abell 1656, the Coma Cluster is over 300 million light - years away. The cluster, named after its parent constellation Coma Berenices, is near the Milky Way's north pole. This places the Coma Cluster in an area unobscured by dust and gas from the plane of the Milky Way, and easily visible by Earth viewers. This Hubble image consists of a section of the cluster that is roughly one - third of the way out from the center of the cluster. One bright spiral galaxy is visible in the upper left of the image. It is distinctly brighter and bluer than galaxies surrounding it. A

PIX4565294

Barree spiral galaxy NGC 6744 in the constellation Peacock - Barred spiral galaxy NGC 6744 in Pavo - The galaxy NGC 6744 is located about 25 million years ago - light from Earth. The morphology of this galaxy is very similar to that of our galaxy, the Lactee Way. Image obtained from the 3.9m telescope of Siding Spring, Australia. This beautiful galaxy is about 25 million light years away in the direction of Pavo, a constellation of the southern hemisphere winter. NGC 6744 is believed to one of the most Milky Way - like of all the nearby spirals, with fluffy (flocculent) spiral arms and a large and distinctly elongated nucleus. It also has other similarities to the Milky Way that are not visible here (but seen on a deep image) with at least one distorted companion galaxy superficially similar to one of the Magellanic Clouds. The CCD chip that made this picture at the prime focus of the AAT (Siding Spring) covers about 7 arc minutes of sky. But the galaxy has a much bigger angular size t

Barree spiral galaxy NGC 6744 in the constellation Peacock - Barred spiral galaxy NGC 6744 in Pavo - The galaxy NGC 6744 is located about 25 million years ago - light from Earth. The morphology of this galaxy is very similar to that of our galaxy, the Lactee Way. Image obtained from the 3.9m telescope of Siding Spring, Australia. This beautiful galaxy is about 25 million light years away in the direction of Pavo, a constellation of the southern hemisphere winter. NGC 6744 is believed to one of the most Milky Way - like of all the nearby spirals, with fluffy (flocculent) spiral arms and a large and distinctly elongated nucleus. It also has other similarities to the Milky Way that are not visible here (but seen on a deep image) with at least one distorted companion galaxy superficially similar to one of the Magellanic Clouds. The CCD chip that made this picture at the prime focus of the AAT (Siding Spring) covers about 7 arc minutes of sky. But the galaxy has a much bigger angular size t

PIX4612955

Captain The Hon. William Hervey, RN (1699-1776)

Captain The Hon. William Hervey, RN (1699-1776)

Fayram, John (fl.1727-1743)

USB1156652

Planetary nebula M 27 (NGC 6853) in the little fox - This excellent image of the Dumbbell Nebula (M27, NGC6853), a planetary nebula in the constellation of Vulpecula, was taken at the 3.5 - meter WIYN telescope using the mini - mosaic imager. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high - energy, ultraviolet light from the core ionizes the cloud. This makes the nebula emit mostly a strong emission - line spectrum. This color image was obtained by combining three separate pictures, each one taken through a narrow filter centered at the emission wavelengths of Hydrogen (H alpha, red, 656 nm), doubly ionized Oxygen (OII, green, 501 nm), and neutral Oxygen (OI, blue, 630 nm). It is physically very interesting that neutral gas can survive in a region right next to highly ionized gas, and this image shows

Planetary nebula M 27 (NGC 6853) in the little fox - This excellent image of the Dumbbell Nebula (M27, NGC6853), a planetary nebula in the constellation of Vulpecula, was taken at the 3.5 - meter WIYN telescope using the mini - mosaic imager. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high - energy, ultraviolet light from the core ionizes the cloud. This makes the nebula emit mostly a strong emission - line spectrum. This color image was obtained by combining three separate pictures, each one taken through a narrow filter centered at the emission wavelengths of Hydrogen (H alpha, red, 656 nm), doubly ionized Oxygen (OII, green, 501 nm), and neutral Oxygen (OI, blue, 630 nm). It is physically very interesting that neutral gas can survive in a region right next to highly ionized gas, and this image shows

PIX4623419

Nebula of the Lagoon (M8) in Sagittarius - The Hourglass Nebula in M8, NGC 6523 - View of the Nebula of the Lagoon (M8/NGC 6523). Located in Sagittarius, at a distance of 5800 years - light, it is visible to the naked eye in good conditions. It is a star-forming region illuminated by several large O-type stars that belong to the open cluster NGC 6530 visible on the left of the image. The brightest part of the nebula is called the hourglass nebula whose gases are excited mainly by two massive supergeant stars Herschel 36 and 9 Sagittarii. At the heart of the Lagoon Nebula in Sagittarius lies the diminutive Hourglass Nebula. This extremely bright object is associated with the blue star alongside it, named Herschel 36 after its discoverer. Herschel described M8 as 'A noble nebula' and 'a fine and complicated nebula', but he was clearly intrigued by the Hourglass which he compared to the nucleus of the Andromeda nebula, M31 as 'decidedly not stellar'. The tiny bright nebula that captures H

Nebula of the Lagoon (M8) in Sagittarius - The Hourglass Nebula in M8, NGC 6523 - View of the Nebula of the Lagoon (M8/NGC 6523). Located in Sagittarius, at a distance of 5800 years - light, it is visible to the naked eye in good conditions. It is a star-forming region illuminated by several large O-type stars that belong to the open cluster NGC 6530 visible on the left of the image. The brightest part of the nebula is called the hourglass nebula whose gases are excited mainly by two massive supergeant stars Herschel 36 and 9 Sagittarii. At the heart of the Lagoon Nebula in Sagittarius lies the diminutive Hourglass Nebula. This extremely bright object is associated with the blue star alongside it, named Herschel 36 after its discoverer. Herschel described M8 as 'A noble nebula' and 'a fine and complicated nebula', but he was clearly intrigued by the Hourglass which he compared to the nucleus of the Andromeda nebula, M31 as 'decidedly not stellar'. The tiny bright nebula that captures H

Adam Block

PIX4619672

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