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Nebula NGC 6188 in the Altar - The NGC 6188 nebula and NGC 6193 in Ara - Nebula NGC 6188 is located about 4000 years from Earth. It is home to a cluster of young stars NGC 6193, formed three million years ago. Image obtained by Siding Spring's 3.9m telescope. Here we see two bright stars whose radiant energy is beating down on to the surface of a dark cloud, very similar to the Horsehead in Orion. The cloud itself is opaque and because of that, very cold inside. These conditions are ideal for the formation of organic molecules on the surfaces of the chilled dust particles. The opacity of the cloud protects the fragile molecules within from the energetic radiation of nearby stars, but as its surface is gradually warmed and eroded, the delicate organic molecules are destroyed and the hydrogen released glows as a distinctive red emission nebula

Nebula NGC 6188 in the Altar - The NGC 6188 nebula and NGC 6193 in Ara - Nebula NGC 6188 is located about 4000 years from Earth. It is home to a cluster of young stars NGC 6193, formed three million years ago. Image obtained by Siding Spring's 3.9m telescope. Here we see two bright stars whose radiant energy is beating down on to the surface of a dark cloud, very similar to the Horsehead in Orion. The cloud itself is opaque and because of that, very cold inside. These conditions are ideal for the formation of organic molecules on the surfaces of the chilled dust particles. The opacity of the cloud protects the fragile molecules within from the energetic radiation of nearby stars, but as its surface is gradually warmed and eroded, the delicate organic molecules are destroyed and the hydrogen released glows as a distinctive red emission nebula

PIX4619274

Nebula NGC 6188 in the Altar - The NGC 6188 nebula and NGC 6193 in Ara - Nebula NGC 6188 is located about 4000 years from Earth. It is home to a cluster of young stars NGC 6193, formed three million years ago. Image obtained by Siding Spring's 3.9m telescope. Here we see two bright stars whose radiant energy is beating down on to the surface of a dark cloud, very similar to the Horsehead in Orion. The cloud itself is opaque and because of that, very cold inside. These conditions are ideal for the formation of organic molecules on the surfaces of the chilled dust particles. The opacity of the cloud protects the fragile molecules within from the energetic radiation of nearby stars, but as its surface is gradually warmed and eroded, the delicate organic molecules are destroyed and the hydrogen released glows as a distinctive red emission nebula

Nebula NGC 6188 in the Altar - The NGC 6188 nebula and NGC 6193 in Ara - Nebula NGC 6188 is located about 4000 years from Earth. It is home to a cluster of young stars NGC 6193, formed three million years ago. Image obtained by Siding Spring's 3.9m telescope. Here we see two bright stars whose radiant energy is beating down on to the surface of a dark cloud, very similar to the Horsehead in Orion. The cloud itself is opaque and because of that, very cold inside. These conditions are ideal for the formation of organic molecules on the surfaces of the chilled dust particles. The opacity of the cloud protects the fragile molecules within from the energetic radiation of nearby stars, but as its surface is gradually warmed and eroded, the delicate organic molecules are destroyed and the hydrogen released glows as a distinctive red emission nebula

PIX4619305

Star Deneb and Nebulae in the Swan - Deneb and the nebular complex of Sh2 - 112 and Sh2 - 115 in Cygnus North is at top. Deneb is the brightest star in the constellation Cygnus and one of the brightest stars in the night sky, with apparent magnitude 1.25. Deneb's absolute magnitude is - 8.73, placing it among the most luminous stars known. Deneb's exact distance from the Earth is a matter of some dispute; figures from 1600 to 3200 light years appear on various online sources. Estimates for Deneb's luminosity range from about 60,000 to 250,000 times the Sun's brightness. At the distance of Sirius it would be brighter than a full moon. In the image is also visible the nebular complexes called Sh2 - 115 (above) and Sh2 - 112 (below), and Abell 71 visible as a tiny bubble in upper right corner. This image is based on data acquired by the Oschin Telescope at the Mount Palomar Observatory

Star Deneb and Nebulae in the Swan - Deneb and the nebular complex of Sh2 - 112 and Sh2 - 115 in Cygnus North is at top. Deneb is the brightest star in the constellation Cygnus and one of the brightest stars in the night sky, with apparent magnitude 1.25. Deneb's absolute magnitude is - 8.73, placing it among the most luminous stars known. Deneb's exact distance from the Earth is a matter of some dispute; figures from 1600 to 3200 light years appear on various online sources. Estimates for Deneb's luminosity range from about 60,000 to 250,000 times the Sun's brightness. At the distance of Sirius it would be brighter than a full moon. In the image is also visible the nebular complexes called Sh2 - 115 (above) and Sh2 - 112 (below), and Abell 71 visible as a tiny bubble in upper right corner. This image is based on data acquired by the Oschin Telescope at the Mount Palomar Observatory

D. De Martin

PIX4621018

Nebula NGC 6559 in Sagittarius - NGC 6559 and IC 1274 - 75 in Sagittarius - Located in Sagittarius, this nebula is located at a distance of about 5000 years - light from Earth. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. This dusty region is probably associated with the brighter and better - known Lagoon and Trifid Nebulae which are nearby in the sky and part of the same molecular cloud. The soft red glow of fluorescent hydrogen is evidence that there are young hot stars associated with the dusty clouds. These bright stars also illuminate the tiny solid particles, producing blue reflection nebulae bordering some of the emission regions. The dust is also evident in silhouette, both as sinuous dark lanes winding through the luminous gas and as the dark patches obscuring the ancient, yellow stars that populate the central parts of the Milky Way

Nebula NGC 6559 in Sagittarius - NGC 6559 and IC 1274 - 75 in Sagittarius - Located in Sagittarius, this nebula is located at a distance of about 5000 years - light from Earth. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. This dusty region is probably associated with the brighter and better - known Lagoon and Trifid Nebulae which are nearby in the sky and part of the same molecular cloud. The soft red glow of fluorescent hydrogen is evidence that there are young hot stars associated with the dusty clouds. These bright stars also illuminate the tiny solid particles, producing blue reflection nebulae bordering some of the emission regions. The dust is also evident in silhouette, both as sinuous dark lanes winding through the luminous gas and as the dark patches obscuring the ancient, yellow stars that populate the central parts of the Milky Way

PIX4619831

Apollo 17: Lunar Jeep - Apollo 17: Lunar Rover Vehicle - Mudguard at the rear of the jeep. 12/12/1972. A close - up view of the lunar roving vehicle (LRV) at the Taurus - Littrow landing site photographed during Apollo 17 lunar surface extravehicular activity. Note the makeshift repair arrangement on the right rear fender of the LRV. During EVA - 1 a hammer got underneath the fender and a part of it was knocked off. Astronauts Eugene A. Cernan and Harrison H. Schmitt were reporting a problem with lunar dust because of the damage fender. Following a suggestion from astronaut John W. Young in the Mission Control Center at Houston the crewmen repaired the fender early in EVA - 2 using lunar maps and clamps from the optical alignment telescope lamp. Schmitt is seated in the rover. Cernan took this picture. 12 Dec 1972

Apollo 17: Lunar Jeep - Apollo 17: Lunar Rover Vehicle - Mudguard at the rear of the jeep. 12/12/1972. A close - up view of the lunar roving vehicle (LRV) at the Taurus - Littrow landing site photographed during Apollo 17 lunar surface extravehicular activity. Note the makeshift repair arrangement on the right rear fender of the LRV. During EVA - 1 a hammer got underneath the fender and a part of it was knocked off. Astronauts Eugene A. Cernan and Harrison H. Schmitt were reporting a problem with lunar dust because of the damage fender. Following a suggestion from astronaut John W. Young in the Mission Control Center at Houston the crewmen repaired the fender early in EVA - 2 using lunar maps and clamps from the optical alignment telescope lamp. Schmitt is seated in the rover. Cernan took this picture. 12 Dec 1972

PIX4598144

Spiral galaxy of Sombrero M104 in the Virgin - The Sombrero galaxy (M104) in Virgo - Image of the spiral galaxy M104 (Sombrero galaxy), located about 28 million years ago - light. Image obtained with the 3.9m Anglo - Australian Telescope from Siding Spring. The Sombrero, named after the broad - brimmed Mexican hat it superficially resembles, is probably the most famous galaxy in the sky. The light from this remarkable spiral system is dominated by the billions of old, faint stars that form the vast 'bulge' around its tiny hidden nucleus. Most spirals, including the Milky Way, have clouds of old, faint stars around their nuclei, but in M104 the galaxy's light is dominated by them. This effect is enhanced because disk of the galaxy is seen nearly edge - on and dust in its outer parts is in silhouette as it crosses the picture. The galaxy is about 28 million light years distant

Spiral galaxy of Sombrero M104 in the Virgin - The Sombrero galaxy (M104) in Virgo - Image of the spiral galaxy M104 (Sombrero galaxy), located about 28 million years ago - light. Image obtained with the 3.9m Anglo - Australian Telescope from Siding Spring. The Sombrero, named after the broad - brimmed Mexican hat it superficially resembles, is probably the most famous galaxy in the sky. The light from this remarkable spiral system is dominated by the billions of old, faint stars that form the vast 'bulge' around its tiny hidden nucleus. Most spirals, including the Milky Way, have clouds of old, faint stars around their nuclei, but in M104 the galaxy's light is dominated by them. This effect is enhanced because disk of the galaxy is seen nearly edge - on and dust in its outer parts is in silhouette as it crosses the picture. The galaxy is about 28 million light years distant

PIX4611725

Exoplanete HD 85512b - The rocky super - Earth HD 85512 b - HD 85512 b is an exoplanet orbiting around the star HD 85512, located about 36 years ago - light from Earth in the constellation of Sails. It is one of the smallest exoplanets in habitable areas discovered to date; this super Earth was detected with the help of the HARPS program at the La Silla Observatory in Chile in August 2011. This artist's impression shows the planet orbiting the Sun - like star HD 85512 in the southern constellation of Vela (The Sail). This planet is one of sixteen super - Earths discovered by the HARPS instrument on the 3.6 - metre telescope at Eso's La Silla Observatory. This planet, HD 85512b, is about 3.6 times as massive as the Earth and lies at the edge of the habitable zone around the star, where liquid water, and perhaps even life, could potentially exist

Exoplanete HD 85512b - The rocky super - Earth HD 85512 b - HD 85512 b is an exoplanet orbiting around the star HD 85512, located about 36 years ago - light from Earth in the constellation of Sails. It is one of the smallest exoplanets in habitable areas discovered to date; this super Earth was detected with the help of the HARPS program at the La Silla Observatory in Chile in August 2011. This artist's impression shows the planet orbiting the Sun - like star HD 85512 in the southern constellation of Vela (The Sail). This planet is one of sixteen super - Earths discovered by the HARPS instrument on the 3.6 - metre telescope at Eso's La Silla Observatory. This planet, HD 85512b, is about 3.6 times as massive as the Earth and lies at the edge of the habitable zone around the star, where liquid water, and perhaps even life, could potentially exist

PIX4573989

Comete 17P/Holmes and Persee constellation - Comet 17P/Holmes and Perseus constellation - 24 October 2007, Quimper In a few hours, on 24 October 2007, comet 17P/Holmes changed from magnitude 17 (an invisible star even in a good telescope) to magnitude 3, that is, bright enough to be easily visible even in the city or by a full moon night. Tonight, she's visible like a star in the middle of Persee's thigh. Helas, its appearance is stellar since it has no tail. On Oct. 24, 2007, in a few hours, a comet has brightenned from magnitude 17 (invisible in a good instrument) to magnitude 3, bright enough to be visible with naked - eyes from a city or during a Full Moon night. This comet is Holmes. Tonight, it is visible as a new star in the thigh of Perseus constellation. But it displays no tail and keep a stellar aspect

Comete 17P/Holmes and Persee constellation - Comet 17P/Holmes and Perseus constellation - 24 October 2007, Quimper In a few hours, on 24 October 2007, comet 17P/Holmes changed from magnitude 17 (an invisible star even in a good telescope) to magnitude 3, that is, bright enough to be easily visible even in the city or by a full moon night. Tonight, she's visible like a star in the middle of Persee's thigh. Helas, its appearance is stellar since it has no tail. On Oct. 24, 2007, in a few hours, a comet has brightenned from magnitude 17 (invisible in a good instrument) to magnitude 3, bright enough to be visible with naked - eyes from a city or during a Full Moon night. This comet is Holmes. Tonight, it is visible as a new star in the thigh of Perseus constellation. But it displays no tail and keep a stellar aspect

Laurent Laveder

PIX4570847

Centauri Omega globular cluster - The globular cluster Omega Centauri, NGC 5139 - Visible to the naked eye in the southern hemisphere, Centaurus Omega is the most massive globular cluster in the galaxy. About 17,000 light years ago, millions of stars nearly 12 billion years old are concentrated here. NGC 5139 is the largest and most spectacular globular cluster in the entire night sky, and the largest in our galaxy. At 36 arc minutes, Omega Centauri is larger than the full moon in apparent size. It is located about 17,000 light years away from our Sun and at 4th magnitude, is easily visible without a telescope as a “” star”” in the constellation of Centaurus. It contains about 2 million stars, almost twice as many as M13. The stars in globular clusters are generally older, redder and less massive than our Sun

Centauri Omega globular cluster - The globular cluster Omega Centauri, NGC 5139 - Visible to the naked eye in the southern hemisphere, Centaurus Omega is the most massive globular cluster in the galaxy. About 17,000 light years ago, millions of stars nearly 12 billion years old are concentrated here. NGC 5139 is the largest and most spectacular globular cluster in the entire night sky, and the largest in our galaxy. At 36 arc minutes, Omega Centauri is larger than the full moon in apparent size. It is located about 17,000 light years away from our Sun and at 4th magnitude, is easily visible without a telescope as a “” star”” in the constellation of Centaurus. It contains about 2 million stars, almost twice as many as M13. The stars in globular clusters are generally older, redder and less massive than our Sun

Jerry Lodriguss

PIX4564370

Exoplanete HD 85512b - The rocky super - Earth HD 85512 b - HD 85512 b is an exoplanet orbiting around the star HD 85512, located about 36 years ago - light from Earth in the constellation of Sails. It is one of the smallest exoplanets in habitable areas discovered to date; this super Earth was detected with the help of the HARPS program at the La Silla Observatory in Chile in August 2011. This artist's impression shows the planet orbiting the Sun - like star HD 85512 in the southern constellation of Vela (The Sail). This planet is one of sixteen super - Earths discovered by the HARPS instrument on the 3.6 - metre telescope at Eso's La Silla Observatory. This planet, HD 85512b, is about 3.6 times as massive as the Earth and lies at the edge of the habitable zone around the star, where liquid water, and perhaps even life, could potentially exist

Exoplanete HD 85512b - The rocky super - Earth HD 85512 b - HD 85512 b is an exoplanet orbiting around the star HD 85512, located about 36 years ago - light from Earth in the constellation of Sails. It is one of the smallest exoplanets in habitable areas discovered to date; this super Earth was detected with the help of the HARPS program at the La Silla Observatory in Chile in August 2011. This artist's impression shows the planet orbiting the Sun - like star HD 85512 in the southern constellation of Vela (The Sail). This planet is one of sixteen super - Earths discovered by the HARPS instrument on the 3.6 - metre telescope at Eso's La Silla Observatory. This planet, HD 85512b, is about 3.6 times as massive as the Earth and lies at the edge of the habitable zone around the star, where liquid water, and perhaps even life, could potentially exist

PIX4573980

Open cluster of Pleiades - Open cluster of Pleiades - The north is at top. The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is one of the brightest and famous star clusters visible in the northern hemisphere. It consists of about 500 bright, hot, young stars that were all born at the same time between 75 and 150 million years ago within a large cloud of dust and gas. The cluster contains many stars, of which only a handful are commonly visible to the naked eye. The blue haze that accompanies them is due to very fine dust which still remains and preferentially reflects the blue light from the stars. This star cluster lies some 440 light years away from the Earth, in the constellation of Taurus. This image is based on data acquired by the Oschin Telescope at the Mount Palomar Observatory

Open cluster of Pleiades - Open cluster of Pleiades - The north is at top. The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is one of the brightest and famous star clusters visible in the northern hemisphere. It consists of about 500 bright, hot, young stars that were all born at the same time between 75 and 150 million years ago within a large cloud of dust and gas. The cluster contains many stars, of which only a handful are commonly visible to the naked eye. The blue haze that accompanies them is due to very fine dust which still remains and preferentially reflects the blue light from the stars. This star cluster lies some 440 light years away from the Earth, in the constellation of Taurus. This image is based on data acquired by the Oschin Telescope at the Mount Palomar Observatory

D. De Martin

PIX4568766

Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula (M57) in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Despite their name, planetary nebulae have nothing to do with planets. They were named originally because their discoverers observed them visually and they did not appear as stellar point sources, but rather as small diffuse objects that resembled the outer planets in our solar system such

Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula (M57) in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Despite their name, planetary nebulae have nothing to do with planets. They were named originally because their discoverers observed them visually and they did not appear as stellar point sources, but rather as small diffuse objects that resembled the outer planets in our solar system such

Jerry Lodriguss

PIX4623312

Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula (M57) in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Despite their name, planetary nebulae have nothing to do with planets. They were named originally because their discoverers observed them visually and they did not appear as stellar point sources, but rather as small diffuse objects that resembled the outer planets in our solar system such

Planetary nebula M57 (NGC 6720) in Lyra - The Ring nebula (M57) in Lyra - The planetary nebula of Lyra (M57) is located about 2000 years - light from Earth. With a magnitude of 9.0, this nebula is easily observed with a small telescope. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. The Ring Nebula, M57, is the most famous example of a planetary nebula. Located about 2,000 light years away, it has an apparent diameter of 1 arc minute and a real diameter of about one light year. At magnitude 9.0 its high surface brightness makes it an easy object, even from the city and even with small telescopes. Despite their name, planetary nebulae have nothing to do with planets. They were named originally because their discoverers observed them visually and they did not appear as stellar point sources, but rather as small diffuse objects that resembled the outer planets in our solar system such

Sebastian Voltmer

PIX4623321

The three stars that make up the Centaur Alpha System are the closest stars to the Sun. The image on the left shows the double alpha star of the Centauri (Alpha Centauri A and B) overexposed to the red dwarf star Proxima of the Centaurus (indicated by the arrow). Proxima du Centaur is located at a distance of 4.22 years - light from the Sun but is invisible to the naked eye. Alpha Centauri A and B are a little further away, 4.36 years from the Sun. These two stars are relatively similar to the Sun. Although Proxima of Centauri is distant from the Alpha couple of Centauri, its movement seems to link it to this system and is sometimes called Alpha Centauri C. Location of the Alpha Centauri triple stellar system in the sky. The brighter stars (Alpha Centauri A and B) are strongly overexposed, with the outlying member, Proxima lying approx. 2.2* to the south - west (arrow). Smaller areas around the stars are shown in the inserts to the right. The photo has been reproduced from a blue - sen

The three stars that make up the Centaur Alpha System are the closest stars to the Sun. The image on the left shows the double alpha star of the Centauri (Alpha Centauri A and B) overexposed to the red dwarf star Proxima of the Centaurus (indicated by the arrow). Proxima du Centaur is located at a distance of 4.22 years - light from the Sun but is invisible to the naked eye. Alpha Centauri A and B are a little further away, 4.36 years from the Sun. These two stars are relatively similar to the Sun. Although Proxima of Centauri is distant from the Alpha couple of Centauri, its movement seems to link it to this system and is sometimes called Alpha Centauri C. Location of the Alpha Centauri triple stellar system in the sky. The brighter stars (Alpha Centauri A and B) are strongly overexposed, with the outlying member, Proxima lying approx. 2.2* to the south - west (arrow). Smaller areas around the stars are shown in the inserts to the right. The photo has been reproduced from a blue - sen

PIX4571830

Comet C/2016 R2 Panstarrs the blue carbon monoxide comet - rotating comet tails on January 19th 2018 (digital photo)

Comet C/2016 R2 Panstarrs the blue carbon monoxide comet - rotating comet tails on January 19th 2018 (digital photo)

Rhemann, Gerald (21st century)

MMM7340358

Admiral Thomas Mathews (1676-1751), 1743 (oil on canvas)

Admiral Thomas Mathews (1676-1751), 1743 (oil on canvas)

Arnulphy, Claude (1697-1786)

MMM7337968

Butterfly Nebula, c 2005

Butterfly Nebula, c 2005

UIS5104277

Swan Lace Detail - The Veil nebula, IC 1340 - IC 1340 is a detail of the Swan lace, a remnant of supernova located about 1900 years - light in the constellation Swan. The supernova exploded 5,000 or 8,000 years ago. Image in false colors obtained with a telescope measuring 40 cm in diameter through various filters that highlight the oxygen (in blue), and the hydrogen (in red). This image shows a faint portion of the eastern veil nebula in Cygnus, a large, almost spherical glowing shell of gas, the expanding remains of a star that exploded between 5,000 and 8,000 years ago. The nebula (and thus its precursor star) is about 1900 light years distant and about 100 light years across. It is the result of the shockwave from the explosion exciting the tenuous interstellar medium and making it glow. Shooting in these wavelengths and with the color combine choices yielded a spooky view of something resembling a Bat or Owl. Red is Hydrogen, Blue is Oxygen, Green is the product of both

Swan Lace Detail - The Veil nebula, IC 1340 - IC 1340 is a detail of the Swan lace, a remnant of supernova located about 1900 years - light in the constellation Swan. The supernova exploded 5,000 or 8,000 years ago. Image in false colors obtained with a telescope measuring 40 cm in diameter through various filters that highlight the oxygen (in blue), and the hydrogen (in red). This image shows a faint portion of the eastern veil nebula in Cygnus, a large, almost spherical glowing shell of gas, the expanding remains of a star that exploded between 5,000 and 8,000 years ago. The nebula (and thus its precursor star) is about 1900 light years distant and about 100 light years across. It is the result of the shockwave from the explosion exciting the tenuous interstellar medium and making it glow. Shooting in these wavelengths and with the color combine choices yielded a spooky view of something resembling a Bat or Owl. Red is Hydrogen, Blue is Oxygen, Green is the product of both

PIX4582768

Nebula of the cone NGC 2264 and S star Monocerotis - NGC 2264 and S Monocerotis - Region H II located about 2600 years - light from Earth. The bright star is S Monocerotis, a star of magnitude 4.7. Image obtained by Siding Spring's 3.9m telescope. The region around the 4.7 magnitude star S Mon is a fascinating mixture of red fluorescent hydrogen and dark, obscuring dust lanes. Some dust patches are close enough to bright stars to reflect light from them; these appear blue for the same reason that the day - time sky is blue - because some of the interstellar particles preferentially scatter blue light. Some of the wispy tendrils of nebulosity are Herbig - Haro objects, jets of matter ejected from newly - formed stars still hidden within the nebula. About 250 stars have been recognised as members of NGC 2264 which is at a distance of about 2700 light years

Nebula of the cone NGC 2264 and S star Monocerotis - NGC 2264 and S Monocerotis - Region H II located about 2600 years - light from Earth. The bright star is S Monocerotis, a star of magnitude 4.7. Image obtained by Siding Spring's 3.9m telescope. The region around the 4.7 magnitude star S Mon is a fascinating mixture of red fluorescent hydrogen and dark, obscuring dust lanes. Some dust patches are close enough to bright stars to reflect light from them; these appear blue for the same reason that the day - time sky is blue - because some of the interstellar particles preferentially scatter blue light. Some of the wispy tendrils of nebulosity are Herbig - Haro objects, jets of matter ejected from newly - formed stars still hidden within the nebula. About 250 stars have been recognised as members of NGC 2264 which is at a distance of about 2700 light years

PIX4618722

Nebulae IC 2948 and 2944 in Centaur - The Running Chicken Nebula - Nebula IC 2948 is a vast nebula located about 6000 light years from Earth in the southern constellation of Centaur. It is associated with the cluster of stars IC 2944 near which Bok's blood cells are visible. A Bok's blood cell is a dark interstellar cloud of gases and dust that absorb light. If it condenses enough, it gives birth to new stars. This image from the Wide Field Imager on the MPG/ESO 2.2 - metre telescope shows the Running Chicken Nebula, a cloud of gas and newborn stars that lies around 6500 light - years away from us in the constellation of Centaurus (The Centaur). Officially called IC 2944, or the Lambda Centauri Nebula, its strange nickname comes from the bird - like shape of its brightest region. The star Lambda Centauri itself lies just outside the field of view

Nebulae IC 2948 and 2944 in Centaur - The Running Chicken Nebula - Nebula IC 2948 is a vast nebula located about 6000 light years from Earth in the southern constellation of Centaur. It is associated with the cluster of stars IC 2944 near which Bok's blood cells are visible. A Bok's blood cell is a dark interstellar cloud of gases and dust that absorb light. If it condenses enough, it gives birth to new stars. This image from the Wide Field Imager on the MPG/ESO 2.2 - metre telescope shows the Running Chicken Nebula, a cloud of gas and newborn stars that lies around 6500 light - years away from us in the constellation of Centaurus (The Centaur). Officially called IC 2944, or the Lambda Centauri Nebula, its strange nickname comes from the bird - like shape of its brightest region. The star Lambda Centauri itself lies just outside the field of view

PIX4622594

EUROPEAN SPACE AGENCY X-RAY MISSION ONE STEP CLOSER TO LIFT OFF, 1999-05-30 (photo)

EUROPEAN SPACE AGENCY X-RAY MISSION ONE STEP CLOSER TO LIFT OFF, 1999-05-30 (photo)

REU8293551

Cover of Casabella, N. 573, November 1990, 20th Century, graphic, 31 x 28 cm

Cover of Casabella, N. 573, November 1990, 20th Century, graphic, 31 x 28 cm

Italian School, (20th century)

Marco Covi

MEP1191043

Globular cluster M13 - Hercules cluster - M13 The Great Globular Cluster in Hercules - M13 (NGC 6205), extends for about 150 years - light and is 22,000 years - light from Earth in the constellation of Hercules. It contains hundreds of thousands of stars. Lower left is the galaxy NGC 6207. M13 is the Great Globular Cluster in the constellation of Hercules. It is one of the largest and most beautiful globular clusters visible from the northern hemisphere. At magnitude 5.8, M13 is visible to the keen unaided eye at a dark - sky observing site. It is located about 25,000 light years away. It has an apparent angular diameter of 15 to 25 arc minutes, depending on the size of the telescope used to observe it. This corresponds to a real size of about 145 light years. It contains hundreds of thousands of stars. M13 was discovered in 1714 by Edmond Halley and catalogued by Charles Messier in 1764. Galaxy NGC 6207 can be seen at the lower left. North is to the left in this image

Globular cluster M13 - Hercules cluster - M13 The Great Globular Cluster in Hercules - M13 (NGC 6205), extends for about 150 years - light and is 22,000 years - light from Earth in the constellation of Hercules. It contains hundreds of thousands of stars. Lower left is the galaxy NGC 6207. M13 is the Great Globular Cluster in the constellation of Hercules. It is one of the largest and most beautiful globular clusters visible from the northern hemisphere. At magnitude 5.8, M13 is visible to the keen unaided eye at a dark - sky observing site. It is located about 25,000 light years away. It has an apparent angular diameter of 15 to 25 arc minutes, depending on the size of the telescope used to observe it. This corresponds to a real size of about 145 light years. It contains hundreds of thousands of stars. M13 was discovered in 1714 by Edmond Halley and catalogued by Charles Messier in 1764. Galaxy NGC 6207 can be seen at the lower left. North is to the left in this image

Jerry Lodriguss

PIX4564613

Constellation of Sextant - Constellation of Sextans - Constellation of Sextant; below part of the constellation Hydra. At the top of the picture, the bright star is Regulus, of the Lion. Sextans, and part of Hydra. Top of image, the bright star is Regulus in Leo. Sextans, (the Sextant, originally Sextans Uraniae), is small, faint, equatorial constellation south of Leo, framed by the bright stars Regulus to the north and Alphard to the west. It was introduced by Johannes Hevelius in 1687 to commemorate the instrument with which he continued to measure star positions for long after the telescope had been invented. This small and insignificant constellation measures a little more than 17 degrees on a side (about 313 degrees square) and is ranked 45th in area out of the 88 modern constellations. In contrast is the winding collection of stars that make up the head of the Hydra, the Water Snake. This is the largest constellation in the sky, extending over 1300 square degrees, and though the

Constellation of Sextant - Constellation of Sextans - Constellation of Sextant; below part of the constellation Hydra. At the top of the picture, the bright star is Regulus, of the Lion. Sextans, and part of Hydra. Top of image, the bright star is Regulus in Leo. Sextans, (the Sextant, originally Sextans Uraniae), is small, faint, equatorial constellation south of Leo, framed by the bright stars Regulus to the north and Alphard to the west. It was introduced by Johannes Hevelius in 1687 to commemorate the instrument with which he continued to measure star positions for long after the telescope had been invented. This small and insignificant constellation measures a little more than 17 degrees on a side (about 313 degrees square) and is ranked 45th in area out of the 88 modern constellations. In contrast is the winding collection of stars that make up the head of the Hydra, the Water Snake. This is the largest constellation in the sky, extending over 1300 square degrees, and though the

PIX4594022

Constellations de la Compsole, la Machine Pneumatica et les Voiles - Constellations Antlia, Pyxis and Vela - Constellations de l'hemisphere sud Antlia (originally Antlia Pneumatica, the Air Pump) is an unremarkable constellation invented by the Abbe Nicolas de Lacaille in the 1750s. It is hemmed in by the meandering body of Hydra to the north and the sparkling constellations of the Milky Way to the south. It contains a fine planetary nebula, NGC 3132 and a beautiful spiral galaxy, NGC 2997. Pyxis (Pyxis Nautica, the Mariner's Compasse) is the least interesting fragment of the great vessel Argo Navis, dismantled by Lacaille. The other parts are Puppis (the stern), Carina, (the keel) and Vela. Vela (the sails) is best known for the supernova remnant seen on large telescope pictures and the Gum nebula, visible as faint red nebulosity towards the right (west) of the constellation. Best seen in the early evening in March - April Other constellations in the image: Carina, Centaurus, Corvus,

Constellations de la Compsole, la Machine Pneumatica et les Voiles - Constellations Antlia, Pyxis and Vela - Constellations de l'hemisphere sud Antlia (originally Antlia Pneumatica, the Air Pump) is an unremarkable constellation invented by the Abbe Nicolas de Lacaille in the 1750s. It is hemmed in by the meandering body of Hydra to the north and the sparkling constellations of the Milky Way to the south. It contains a fine planetary nebula, NGC 3132 and a beautiful spiral galaxy, NGC 2997. Pyxis (Pyxis Nautica, the Mariner's Compasse) is the least interesting fragment of the great vessel Argo Navis, dismantled by Lacaille. The other parts are Puppis (the stern), Carina, (the keel) and Vela. Vela (the sails) is best known for the supernova remnant seen on large telescope pictures and the Gum nebula, visible as faint red nebulosity towards the right (west) of the constellation. Best seen in the early evening in March - April Other constellations in the image: Carina, Centaurus, Corvus,

PIX4589227

Constellation Lievre - Constellation of Lepus - The constellation Lievre is located below the constellation Orion. On the left, the bright star Sirius. Despite the faintness of its stars, Lepus (the Hare) was known in ancient Greece, as was Orion the hunter, at whose feet it resides, inconspicuously. The hare (or rabbit) is a creature traditionally associated with the Moon, since, with imagination, the man in the Moon features can also be seen as a rabbit. This connection with Orion makes mythological sense, since the Moon was perpetually chased across the sky by the Sun and Orion is a Sun god. Lepus is a middling - sized constellation, ranking 51 in size in the modern 88. Its brightest star is Alpha Leporis (Arneb), from the Arabic al-arnab meaning 'the hare'. Also visible in the image is R Leporis, Hind's Crimson star, whose brightness varies over 5 magnitudes (100 times) over a period of 423 days. It is a carbon star and at its maximum is a fine sight in a small telescope or good bi

Constellation Lievre - Constellation of Lepus - The constellation Lievre is located below the constellation Orion. On the left, the bright star Sirius. Despite the faintness of its stars, Lepus (the Hare) was known in ancient Greece, as was Orion the hunter, at whose feet it resides, inconspicuously. The hare (or rabbit) is a creature traditionally associated with the Moon, since, with imagination, the man in the Moon features can also be seen as a rabbit. This connection with Orion makes mythological sense, since the Moon was perpetually chased across the sky by the Sun and Orion is a Sun god. Lepus is a middling - sized constellation, ranking 51 in size in the modern 88. Its brightest star is Alpha Leporis (Arneb), from the Arabic al-arnab meaning 'the hare'. Also visible in the image is R Leporis, Hind's Crimson star, whose brightness varies over 5 magnitudes (100 times) over a period of 423 days. It is a carbon star and at its maximum is a fine sight in a small telescope or good bi

PIX4592022

Constellation Lievre - Constellation of Lepus - The constellation Lievre is located below the constellation Orion. On the left, the bright star Sirius. Despite the faintness of its stars, Lepus (the Hare) was known in ancient Greece, as was Orion the hunter, at whose feet it resides, inconspicuously. The hare (or rabbit) is a creature traditionally associated with the Moon, since, with imagination, the man in the Moon features can also be seen as a rabbit. This connection with Orion makes mythological sense, since the Moon was perpetually chased across the sky by the Sun and Orion is a Sun god. Lepus is a middling - sized constellation, ranking 51 in size in the modern 88. Its brightest star is Alpha Leporis (Arneb), from the Arabic al-arnab meaning 'the hare'. Also visible in the image is R Leporis, Hind's Crimson star, whose brightness varies over 5 magnitudes (100 times) over a period of 423 days. It is a carbon star and at its maximum is a fine sight in a small telescope or good bi

Constellation Lievre - Constellation of Lepus - The constellation Lievre is located below the constellation Orion. On the left, the bright star Sirius. Despite the faintness of its stars, Lepus (the Hare) was known in ancient Greece, as was Orion the hunter, at whose feet it resides, inconspicuously. The hare (or rabbit) is a creature traditionally associated with the Moon, since, with imagination, the man in the Moon features can also be seen as a rabbit. This connection with Orion makes mythological sense, since the Moon was perpetually chased across the sky by the Sun and Orion is a Sun god. Lepus is a middling - sized constellation, ranking 51 in size in the modern 88. Its brightest star is Alpha Leporis (Arneb), from the Arabic al-arnab meaning 'the hare'. Also visible in the image is R Leporis, Hind's Crimson star, whose brightness varies over 5 magnitudes (100 times) over a period of 423 days. It is a carbon star and at its maximum is a fine sight in a small telescope or good bi

PIX4592024

Nebula of the cone NGC 2264 and S star Monocerotis - NGC 2264 and S Monocerotis - Region H II located about 2600 years - light from Earth. The bright star is S Monocerotis, a star of magnitude 4.7. Image obtained by Siding Spring's 3.9m telescope. The region around the 4.7 magnitude star S Mon is a fascinating mixture of red fluorescent hydrogen and dark, obscuring dust lanes. Some dust patches are close enough to bright stars to reflect light from them; these appear blue for the same reason that the day - time sky is blue - because some of the interstellar particles preferentially scatter blue light. Some of the wispy tendrils of nebulosity are Herbig - Haro objects, jets of matter ejected from newly - formed stars still hidden within the nebula. About 250 stars have been recognised as members of NGC 2264 which is at a distance of about 2700 light years

Nebula of the cone NGC 2264 and S star Monocerotis - NGC 2264 and S Monocerotis - Region H II located about 2600 years - light from Earth. The bright star is S Monocerotis, a star of magnitude 4.7. Image obtained by Siding Spring's 3.9m telescope. The region around the 4.7 magnitude star S Mon is a fascinating mixture of red fluorescent hydrogen and dark, obscuring dust lanes. Some dust patches are close enough to bright stars to reflect light from them; these appear blue for the same reason that the day - time sky is blue - because some of the interstellar particles preferentially scatter blue light. Some of the wispy tendrils of nebulosity are Herbig - Haro objects, jets of matter ejected from newly - formed stars still hidden within the nebula. About 250 stars have been recognised as members of NGC 2264 which is at a distance of about 2700 light years

PIX4618685

Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained with a 90 cm telescope, through various filters including an H-alpha filter. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. 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

Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained with a 90 cm telescope, through various filters including an H-alpha filter. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. 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

PIX4623489

Dec. 12, 1953 - Giant Bridge Seen On The Moon. Discovery By Astronomer: Astronomers have spotted a huge bridge on the moon which looks” like an engineering job”. Dr. H. Percy Wilkins, Fellow of the Royal Astronomical Society, said on the B. B2C's radio newsreel last night that the bridge is 20 miles long and 5,000 feet high, and spans a gulf between royal mountain ranges 6,000 ft. and 10,000 feet high. But there do not appear to be men on the moon after all.” The bridge, is, of course, not man made” - said Dr. Wilkins after the broadcast. Though the span is 20 miles the arch is probably only two miles across. The explanation? “A meteorite might have crashed through a molten-lava barrier and as the barrier solidified an arch was left” he said

Dec. 12, 1953 - Giant Bridge Seen On The Moon. Discovery By Astronomer: Astronomers have spotted a huge bridge on the moon which looks” like an engineering job”. Dr. H. Percy Wilkins, Fellow of the Royal Astronomical Society, said on the B. B2C's radio newsreel last night that the bridge is 20 miles long and 5,000 feet high, and spans a gulf between royal mountain ranges 6,000 ft. and 10,000 feet high. But there do not appear to be men on the moon after all.” The bridge, is, of course, not man made” - said Dr. Wilkins after the broadcast. Though the span is 20 miles the arch is probably only two miles across. The explanation? “A meteorite might have crashed through a molten-lava barrier and as the barrier solidified an arch was left” he said

ZUM4901089

The Rho Ophiuchi Clouds, 2016 (digital photo)

The Rho Ophiuchi Clouds, 2016 (digital photo)

Mironov, Artem (21st century)

MMM7337570

Remnants of the Supernova of Sails - The Vela Supernova Remnant - Remnant of the Supernova of Sails. The supernova exploded 12,000 years ago and is approximately 815 light years away from Earth. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. About 120 centuries ago an inconspicuous star in what is now the constellation of Vela brightened by about 100 million times to rival the Moon as the brightest object in the night sky. This photograph shows a portion of the north - western quadrant of an expanding nebulous shell, which now surrounds the site of the explosion. Near the centre of the nebula (and not seen here) is the Vela pulsar, a rapidly - spinning neutron star only a few kilometres in diameter, the remnant of the star that exploded. This tiny object spins about 11 times a second and until recently was among the faintest stars ever studied at optical wavelengths, a far cry from its brief glory as one of the brightest stars ever seen

Remnants of the Supernova of Sails - The Vela Supernova Remnant - Remnant of the Supernova of Sails. The supernova exploded 12,000 years ago and is approximately 815 light years away from Earth. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. About 120 centuries ago an inconspicuous star in what is now the constellation of Vela brightened by about 100 million times to rival the Moon as the brightest object in the night sky. This photograph shows a portion of the north - western quadrant of an expanding nebulous shell, which now surrounds the site of the explosion. Near the centre of the nebula (and not seen here) is the Vela pulsar, a rapidly - spinning neutron star only a few kilometres in diameter, the remnant of the star that exploded. This tiny object spins about 11 times a second and until recently was among the faintest stars ever studied at optical wavelengths, a far cry from its brief glory as one of the brightest stars ever seen

PIX4582803

Detail of the horse's head nebula by the VLT - Horsehead Nebula, which is situated in the Orion molecular cloud complex. Its official name is Barnard 33 and it is a dust protrusion in the southern region of the dense dust cloud Lynds 1630, on the edge of the HII region IC 434. The distance to the region is about 1400 light - years (430 pc). This beautiful colour image was produced from three images obtained with the multi - mode FORS2 instrument at the second VLT Unit Telescope (KUEYEN) on February 1, 2000. Three predominant colours are seen in the image: red from the hydrogen (H - alpha) emission from the HII region; brown for the foreground obscuring dust; and blue - green for scattered starlight. The blue - green regions of the Horsehead Nebula correspond to regions not shadowed from the light from the stars in the H II region to the top of the picture and scatter stellar radiation towards the observer; these are thus 'mountains' of dust

Detail of the horse's head nebula by the VLT - Horsehead Nebula, which is situated in the Orion molecular cloud complex. Its official name is Barnard 33 and it is a dust protrusion in the southern region of the dense dust cloud Lynds 1630, on the edge of the HII region IC 434. The distance to the region is about 1400 light - years (430 pc). This beautiful colour image was produced from three images obtained with the multi - mode FORS2 instrument at the second VLT Unit Telescope (KUEYEN) on February 1, 2000. Three predominant colours are seen in the image: red from the hydrogen (H - alpha) emission from the HII region; brown for the foreground obscuring dust; and blue - green for scattered starlight. The blue - green regions of the Horsehead Nebula correspond to regions not shadowed from the light from the stars in the H II region to the top of the picture and scatter stellar radiation towards the observer; these are thus 'mountains' of dust

PIX4621971

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. This picture was made without unsharp masking. Unsharp masking emphasises the smallest of the radial blobs inside the red shell, which are about 150 astronomical units across (150 times the Earth - Sun distance). These radial streaks give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 690 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope This faint object is the nearest planetary nebula to the Sun and on deep photographs has a diameter of about half a degree - - the same apparent size as the Sun in the sky. The AAT colour picture shows the brighter parts of the nebula, revealing various ionization levels within the shell of matter ejected from the central star. This picture was made without unsharp masking. Unsharp masking emphasises the smallest of the radial blobs inside the red shell, which are about 150 astronomical units across (150 times the Earth - Sun distance). These radial streaks give this beautiful object its alternative name, the Sunflower Nebula. The Helix is about 400 light years away, or about 100 times more distant than the nearest stars

PIX4623608

Planetary Nebula of the Red Rectangle in the Unicorn - The Red Rectangle, AFGL 915 - This planetary nebula is located about 2300 years ago - light. Image from Siding Spring 3.9m Telescope This surprising object is one of an unusual class of nebulae surrounding mature, sun - like stars that are about to turn into planetary nebulae. Not all pre - planetary nebulae have outbursts like this, and in those that do, the nebula lasts only a few thousand years, hence the rarity. The central star has a thick belt of dust like a girdle around its equator which restricts outflow in that direction. Instead, the star ejects material in a kind of cone from each of its poles. The spectrum of the nebula shows unusual, strong red lines from hydrogen bonded to grains of carbon, however there is sufficient light reflected from the embedded star to dilute the strong red spectrum to the deep yellow we see here

Planetary Nebula of the Red Rectangle in the Unicorn - The Red Rectangle, AFGL 915 - This planetary nebula is located about 2300 years ago - light. Image from Siding Spring 3.9m Telescope This surprising object is one of an unusual class of nebulae surrounding mature, sun - like stars that are about to turn into planetary nebulae. Not all pre - planetary nebulae have outbursts like this, and in those that do, the nebula lasts only a few thousand years, hence the rarity. The central star has a thick belt of dust like a girdle around its equator which restricts outflow in that direction. Instead, the star ejects material in a kind of cone from each of its poles. The spectrum of the nebula shows unusual, strong red lines from hydrogen bonded to grains of carbon, however there is sufficient light reflected from the embedded star to dilute the strong red spectrum to the deep yellow we see here

PIX4623779

Nebula NGC 2359 in the Big Dog - A Wolf - Rayet star in NGC 2359 - NGC 2359 is a nebula in the Big Dog that houses a star Wolf - Rayet, HD 56925. Image obtained by Siding Spring's 3.9m telescope. NGC 2359 is the nebula produced by a single, extremely hot star HD 56925. This is one of the rare Wolf - Rayet stars, whose intrinsic brilliance is combined with high rates of mass loss from its surface. This material is ejected from the star with velocities which approach 2000 kilometers per second. This violent activity quickly reduces the mass of the star which in turn reduces the instability. The rapidly - moving ejected material interacts with the gas and dust around the star producing the cosmic bubble seen here. Such stars are unusual, largely because extreme behaviour of this kind cannot be sustained for long. This particular example is spectacular because it happens to inhabit a part of our Galaxy rich in interstellar gas

Nebula NGC 2359 in the Big Dog - A Wolf - Rayet star in NGC 2359 - NGC 2359 is a nebula in the Big Dog that houses a star Wolf - Rayet, HD 56925. Image obtained by Siding Spring's 3.9m telescope. NGC 2359 is the nebula produced by a single, extremely hot star HD 56925. This is one of the rare Wolf - Rayet stars, whose intrinsic brilliance is combined with high rates of mass loss from its surface. This material is ejected from the star with velocities which approach 2000 kilometers per second. This violent activity quickly reduces the mass of the star which in turn reduces the instability. The rapidly - moving ejected material interacts with the gas and dust around the star producing the cosmic bubble seen here. Such stars are unusual, largely because extreme behaviour of this kind cannot be sustained for long. This particular example is spectacular because it happens to inhabit a part of our Galaxy rich in interstellar gas

PIX4618821

Barree spiral galaxy NGC 4945 in Centaurus - Barred spiral galaxy NGC 4945 in Centaurus - The barree spiral galaxy NGC 4945 is located about 13 million years away - light from Earth. This image was obtained by Siding Spring's 3.9m telescope. This is one of many peculiar galaxies that populate the large southern constellation of Centaurus. This remarkable spiral galaxy seen almost edge - on, and the spiral structure is chaotic and difficult to discern. In part this is because the galaxy is itself extremely dusty, and it is seen through dust in the Milky Way. These effects together account for its yellowish hue, though patches of bluish stars can be seen. The dust in NGC 4945 absorbs most of the visible light, especially the blue light from the numerous bright stars known present within the galaxy. This energy is re - radiated at infrared wavelengths, which penetrate dust more readily, which is why the galaxy is found to be unusually bright in the infrared

Barree spiral galaxy NGC 4945 in Centaurus - Barred spiral galaxy NGC 4945 in Centaurus - The barree spiral galaxy NGC 4945 is located about 13 million years away - light from Earth. This image was obtained by Siding Spring's 3.9m telescope. This is one of many peculiar galaxies that populate the large southern constellation of Centaurus. This remarkable spiral galaxy seen almost edge - on, and the spiral structure is chaotic and difficult to discern. In part this is because the galaxy is itself extremely dusty, and it is seen through dust in the Milky Way. These effects together account for its yellowish hue, though patches of bluish stars can be seen. The dust in NGC 4945 absorbs most of the visible light, especially the blue light from the numerous bright stars known present within the galaxy. This energy is re - radiated at infrared wavelengths, which penetrate dust more readily, which is why the galaxy is found to be unusually bright in the infrared

PIX4612044

Star Formation in the DR21 Region - Star Formation in the DR21 Region - This star-forming region is about 6200 years old - light. Hidden in light visible by interstellar dust, this region rises in infrared light. Gas filaments appear in red; they emphasize the presence of aromatic polycyclic hydrocarbons (PAH); they are organic molecules composed of carbon atoms and hydrogen that could be the germs on which the first bricks of life appeared. Image obtained by the Spitzer space telescope in 2003. Hidden behind a shroud of dust in the constellation Cygnus is a stellar nursery called DR21, which is giving birth to some of the most massive stars in our galaxy. Visible light images reveal no trace of this interstellar cauldron because of heavy dust obscuration. This image from Nasa's Spitzer Space Telescope allow us to peek behind the cosmic veil and pinpoint one of the most massive natal stars yet seen in our Milky Way galaxy. The never - before - seen star is 100,000 times as bright as th

Star Formation in the DR21 Region - Star Formation in the DR21 Region - This star-forming region is about 6200 years old - light. Hidden in light visible by interstellar dust, this region rises in infrared light. Gas filaments appear in red; they emphasize the presence of aromatic polycyclic hydrocarbons (PAH); they are organic molecules composed of carbon atoms and hydrogen that could be the germs on which the first bricks of life appeared. Image obtained by the Spitzer space telescope in 2003. Hidden behind a shroud of dust in the constellation Cygnus is a stellar nursery called DR21, which is giving birth to some of the most massive stars in our galaxy. Visible light images reveal no trace of this interstellar cauldron because of heavy dust obscuration. This image from Nasa's Spitzer Space Telescope allow us to peek behind the cosmic veil and pinpoint one of the most massive natal stars yet seen in our Milky Way galaxy. The never - before - seen star is 100,000 times as bright as th

PIX4621130

Nebula Trifide (M20) in Sagittarius view in visible and infrared - This image composite compares the well - known visible - light picture of the glowing Trifid Nebula (left panel) with infrared views from Nasa's Spitzer Space Telescope (remaining three panels). The Trifid Nebula is a giant star - forming cloud of gas and dust located 5,400 light - years away in the constellation Sagittarius. The false - color Spitzer images reveal a different side of the Trifid Nebula. Where dark lanes of dust are visible trisecting the nebula in the visible - light picture, bright regions of star - forming activity are seen in the Spitzer pictures. All together, Spitzer uncovered 30 massive embryonic stars and 120 smaller newborn stars throughout the Trifid Nebula, in both its dark lanes and luminous clouds. These stars are visible in all the Spitzer images, mainly as yellow or red spots. Embryonic stars are developing stars about to burst into existence. Ten of the 30 massive embryos discovered by Sp

Nebula Trifide (M20) in Sagittarius view in visible and infrared - This image composite compares the well - known visible - light picture of the glowing Trifid Nebula (left panel) with infrared views from Nasa's Spitzer Space Telescope (remaining three panels). The Trifid Nebula is a giant star - forming cloud of gas and dust located 5,400 light - years away in the constellation Sagittarius. The false - color Spitzer images reveal a different side of the Trifid Nebula. Where dark lanes of dust are visible trisecting the nebula in the visible - light picture, bright regions of star - forming activity are seen in the Spitzer pictures. All together, Spitzer uncovered 30 massive embryonic stars and 120 smaller newborn stars throughout the Trifid Nebula, in both its dark lanes and luminous clouds. These stars are visible in all the Spitzer images, mainly as yellow or red spots. Embryonic stars are developing stars about to burst into existence. Ten of the 30 massive embryos discovered by Sp

PIX4619569

Hubble ultra deep field view of galaxies, 2003-2004

Hubble ultra deep field view of galaxies, 2003-2004

UIS5104636

Remnants of the Supernova of Sails - Part of the Vela Supernova Remnant - Rest of the Supernova of Sails. The supernova exploded 12,000 years ago and is approximately 815 light years away from Earth. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. About 120 centuries ago an inconspicuous star in what is now the constellation of Vela brightened by about 100 million times to rival the Moon as the brightest object in the night sky. This photograph shows a portion of the north - western quadrant of an expanding nebulous shell, which now surrounds the site of the explosion. Near the centre of the nebula (and not seen here) is the Vela pulsar, a rapidly - spinning neutron star only a few kilometres in diameter, the remnant of the star that exploded. This tiny object spins about 11 times a second and until recently was among the faintest stars ever studied at optical wavelengths, a far cry from its brief glory as one of the brightest stars ever seen

Remnants of the Supernova of Sails - Part of the Vela Supernova Remnant - Rest of the Supernova of Sails. The supernova exploded 12,000 years ago and is approximately 815 light years away from Earth. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. About 120 centuries ago an inconspicuous star in what is now the constellation of Vela brightened by about 100 million times to rival the Moon as the brightest object in the night sky. This photograph shows a portion of the north - western quadrant of an expanding nebulous shell, which now surrounds the site of the explosion. Near the centre of the nebula (and not seen here) is the Vela pulsar, a rapidly - spinning neutron star only a few kilometres in diameter, the remnant of the star that exploded. This tiny object spins about 11 times a second and until recently was among the faintest stars ever studied at optical wavelengths, a far cry from its brief glory as one of the brightest stars ever seen

PIX4582860

Constellation of Carene - Constellation of Carina - The constellation of Carene, the Great Magellan Cloud, the southern Celestial pole, and the star Canopus. This part of the sky is best seen in the early evening between April and June. Carina the Keel, is a remnant of Argo Navis, a giant mythical sailing vessel afloat on the southern Milky Way, described elsewhere. The constellation is a delight for southern hemisphere observers, with many star clusters and nebulae visible in binoculars or modest telescopes. Some of these are quite spectacular in a large telescope. The second brightest star in the sky, Canopus (a Car) is here as is Eta Carinae, one of the most massive and unstable stars in the Galaxy. Eta is hidden in the most conspicuous nebula in Carina, NGC 3372, the Great Carina nebula. This photograph also shows the location of the south celestial pole and the Large Magellanic Cloud as well as several complete or almost complete constellations, including Apus, Chameleon, Crux, Do

Constellation of Carene - Constellation of Carina - The constellation of Carene, the Great Magellan Cloud, the southern Celestial pole, and the star Canopus. This part of the sky is best seen in the early evening between April and June. Carina the Keel, is a remnant of Argo Navis, a giant mythical sailing vessel afloat on the southern Milky Way, described elsewhere. The constellation is a delight for southern hemisphere observers, with many star clusters and nebulae visible in binoculars or modest telescopes. Some of these are quite spectacular in a large telescope. The second brightest star in the sky, Canopus (a Car) is here as is Eta Carinae, one of the most massive and unstable stars in the Galaxy. Eta is hidden in the most conspicuous nebula in Carina, NGC 3372, the Great Carina nebula. This photograph also shows the location of the south celestial pole and the Large Magellanic Cloud as well as several complete or almost complete constellations, including Apus, Chameleon, Crux, Do

PIX4589603

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained from the 3.9m telescope of Siding Spring, Australia. M83 is thought to be very like our own Galaxy, the Milky Way, but seen from above one of its poles and at a distance of about 15 million light years. Composed of billions of stars and huge clouds of dust and gas, this object is one of the finest examples of a spiral galaxy and shows a concentration of older, yellow stars in its central nucleus with younger, blue stars and patchy red clouds of glowing gas and dark dust lanes in the trailing spiral arms. The massive blue stars occasionally explode as supernovae; at least eight have been seen in Messier 83 in the last 70 years

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained from the 3.9m telescope of Siding Spring, Australia. M83 is thought to be very like our own Galaxy, the Milky Way, but seen from above one of its poles and at a distance of about 15 million light years. Composed of billions of stars and huge clouds of dust and gas, this object is one of the finest examples of a spiral galaxy and shows a concentration of older, yellow stars in its central nucleus with younger, blue stars and patchy red clouds of glowing gas and dark dust lanes in the trailing spiral arms. The massive blue stars occasionally explode as supernovae; at least eight have been seen in Messier 83 in the last 70 years

PIX4612513

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained from the 3.9m telescope of Siding Spring, Australia. M83 is thought to be very like our own Galaxy, the Milky Way, but seen from above one of its poles and at a distance of about 15 million light years. Composed of billions of stars and huge clouds of dust and gas, this object is one of the finest examples of a spiral galaxy and shows a concentration of older, yellow stars in its central nucleus with younger, blue stars and patchy red clouds of glowing gas and dark dust lanes in the trailing spiral arms. The massive blue stars occasionally explode as supernovae; at least eight have been seen in Messier 83 in the last 70 years

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained from the 3.9m telescope of Siding Spring, Australia. M83 is thought to be very like our own Galaxy, the Milky Way, but seen from above one of its poles and at a distance of about 15 million light years. Composed of billions of stars and huge clouds of dust and gas, this object is one of the finest examples of a spiral galaxy and shows a concentration of older, yellow stars in its central nucleus with younger, blue stars and patchy red clouds of glowing gas and dark dust lanes in the trailing spiral arms. The massive blue stars occasionally explode as supernovae; at least eight have been seen in Messier 83 in the last 70 years

PIX4612481

"Etude optique, schemas decrivant les spectres, lentilles trajectoire de la lumiere et relations avec la vision"

"Etude optique, schemas decrivant les spectres, lentilles trajectoire de la lumiere et relations avec la vision"

UIS5078034

Constellation of Sextant - Constellation of Sextans - Constellation of Sextant; below part of the constellation Hydra. At the top of the picture, the bright star is Regulus, of the Lion. Sextans, and part of Hydra. Top of image, the bright star is Regulus in Leo. Sextans, (the Sextant, originally Sextans Uraniae), is small, faint, equatorial constellation south of Leo, framed by the bright stars Regulus to the north and Alphard to the west. It was introduced by Johannes Hevelius in 1687 to commemorate the instrument with which he continued to measure star positions for long after the telescope had been invented. This small and insignificant constellation measures a little more than 17 degrees on a side (about 313 degrees square) and is ranked 45th in area out of the 88 modern constellations. In contrast is the winding collection of stars that make up the head of the Hydra, the Water Snake. This is the largest constellation in the sky, extending over 1300 square degrees, and though the

Constellation of Sextant - Constellation of Sextans - Constellation of Sextant; below part of the constellation Hydra. At the top of the picture, the bright star is Regulus, of the Lion. Sextans, and part of Hydra. Top of image, the bright star is Regulus in Leo. Sextans, (the Sextant, originally Sextans Uraniae), is small, faint, equatorial constellation south of Leo, framed by the bright stars Regulus to the north and Alphard to the west. It was introduced by Johannes Hevelius in 1687 to commemorate the instrument with which he continued to measure star positions for long after the telescope had been invented. This small and insignificant constellation measures a little more than 17 degrees on a side (about 313 degrees square) and is ranked 45th in area out of the 88 modern constellations. In contrast is the winding collection of stars that make up the head of the Hydra, the Water Snake. This is the largest constellation in the sky, extending over 1300 square degrees, and though the

PIX4594016

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 by Siding Spring's 3.9m telescope. In the hollowed - out centre of the Rosette nebula lies NGC 2244, the cluster of young stars recently formed there. The cluster has itself created the cavity, radiation pressure and stellar winds from the stars blowing the gas and dust away from the young cluster. The hottest (and brightest) members of the group are seen as distinctly blue on this photograph, a colour corresponding to a surface temperature around 20,000K which may be compared with the Sun's 5500K. The nebula and its cluster is at a distance of about 4500 light years and shows many streaks and globules of dust, remnants of the cloud from which the stars formed

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 by Siding Spring's 3.9m telescope. In the hollowed - out centre of the Rosette nebula lies NGC 2244, the cluster of young stars recently formed there. The cluster has itself created the cavity, radiation pressure and stellar winds from the stars blowing the gas and dust away from the young cluster. The hottest (and brightest) members of the group are seen as distinctly blue on this photograph, a colour corresponding to a surface temperature around 20,000K which may be compared with the Sun's 5500K. The nebula and its cluster is at a distance of about 4500 light years and shows many streaks and globules of dust, remnants of the cloud from which the stars formed

PIX4618457

Nebula NGC 6164 - 5 in the Rule - The field around NGC 6164 - 65 - This nebula is located about 4000 years from Earth. It's a bipolar nebula around a hot O star at the end of life. Image obtained by Siding Spring's 3.9m telescope. Very hot, massive stars lose substantial amounts of matter from their surfaces during much of their brief lives. Mass - loss is usually a fairly steady process but some stars occasionally develop instabilities and have major outbursts. This star has thrown off at least two distinct lots of material during its lifetime, the brightest and most recent being the bright lobes of NGC 6164 - 5 at the centre of the picture while a much fainter rim of nebulosity can be seen at a considerable distance from the central star, indicating an earlier episode of violent ejection. The nebula is at a distance of about 4200 light years

Nebula NGC 6164 - 5 in the Rule - The field around NGC 6164 - 65 - This nebula is located about 4000 years from Earth. It's a bipolar nebula around a hot O star at the end of life. Image obtained by Siding Spring's 3.9m telescope. Very hot, massive stars lose substantial amounts of matter from their surfaces during much of their brief lives. Mass - loss is usually a fairly steady process but some stars occasionally develop instabilities and have major outbursts. This star has thrown off at least two distinct lots of material during its lifetime, the brightest and most recent being the bright lobes of NGC 6164 - 5 at the centre of the picture while a much fainter rim of nebulosity can be seen at a considerable distance from the central star, indicating an earlier episode of violent ejection. The nebula is at a distance of about 4200 light years

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Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained with a 50 cm telescope, through various filters including an H-alpha filter. The Dumbbell Nebula (M27, NGC 6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. 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

Planetary nebula Dumbbell (M27) in Little Fox - Dumbell planetary nebula (M27) in Vulpecula - The planetary nebula Dumbbell (M27) is located about 1400 years - light from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. Image obtained with a 50 cm telescope, through various filters including an H-alpha filter. The Dumbbell Nebula (M27, NGC 6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. 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

R. Jay GaBany

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Wind emis by a Black Hole Supermassif - Artist view - Wind from Supermassive Black hole - Artist view - Wind artist's view emitted by a supermassive black hole in the center of a galaxy. These extremely strong winds could hinder star formation within the galaxy. Supermassive black holes at the cores of galaxies blast radiation and ultra-fast winds outward, as illustrated in this artist's conception. New data from NASA's Nuclear Spectroscopic Telescope Array (NuStar) and the European Space Agency's (ESA's) XMM-Newton telescopes show that these winds, which contain gases of highly ionized atoms, blow in a nearly spherical fashion, emanating in every direction, as shown in the artwork. The findings rule out the possibility that the winds blow in narrow beams. With the shape and extent of the winds known, the researchers were able to determine the winds' strength. The high-speed winds are powerful enough to shut down star formation throughout a galaxy

Wind emis by a Black Hole Supermassif - Artist view - Wind from Supermassive Black hole - Artist view - Wind artist's view emitted by a supermassive black hole in the center of a galaxy. These extremely strong winds could hinder star formation within the galaxy. Supermassive black holes at the cores of galaxies blast radiation and ultra-fast winds outward, as illustrated in this artist's conception. New data from NASA's Nuclear Spectroscopic Telescope Array (NuStar) and the European Space Agency's (ESA's) XMM-Newton telescopes show that these winds, which contain gases of highly ionized atoms, blow in a nearly spherical fashion, emanating in every direction, as shown in the artwork. The findings rule out the possibility that the winds blow in narrow beams. With the shape and extent of the winds known, the researchers were able to determine the winds' strength. The high-speed winds are powerful enough to shut down star formation throughout a galaxy

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Spiral Galaxy NGC 253 in Sculptor - Spiral galaxy NGC 253 in Sculptor - NGC 253 is the brightest galaxy of the Sculptor's group, the closest galaxy group to the Local Group. It is about 10 million light years away. Image made with Siding Spring's 3.9m telescope in 1975. A mere 10 million light years away, NGC 253 is one of the nearest spiral galaxies, a member of a small group straggling across the southern constellation of Sculptor. It appears elongated because we see it almost edge - on. This galaxy is also one of the dustiest galaxies known and much of its internal detail is hidden by obscuring matter which can be seen as dark patches against the background stars. Despite the obscuration, two spiral arms and many bluish clusters of stars can be seen around the edge of the galaxy. NGC 253 is so close to us that some of the brightest stars are apparent as individuals within the spiral arms

Spiral Galaxy NGC 253 in Sculptor - Spiral galaxy NGC 253 in Sculptor - NGC 253 is the brightest galaxy of the Sculptor's group, the closest galaxy group to the Local Group. It is about 10 million light years away. Image made with Siding Spring's 3.9m telescope in 1975. A mere 10 million light years away, NGC 253 is one of the nearest spiral galaxies, a member of a small group straggling across the southern constellation of Sculptor. It appears elongated because we see it almost edge - on. This galaxy is also one of the dustiest galaxies known and much of its internal detail is hidden by obscuring matter which can be seen as dark patches against the background stars. Despite the obscuration, two spiral arms and many bluish clusters of stars can be seen around the edge of the galaxy. NGC 253 is so close to us that some of the brightest stars are apparent as individuals within the spiral arms

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Centaurus A elliptical galaxy (NGC 5128) in the Centaurus - Galaxy Centaurus A (NGC 5128) - The galaxy NGC 5128 is located about 13 million years away from Earth. This Giant Galaxy is a powerful radio source known as Centaurus A. It is an active galaxy whose energy comes from a supermassive black hole. Image obtained from the 3.9m telescope of Siding Spring, Australia. Centaurus A is a most unusual galaxy. The circular, uniformly bright portion is composed of several thousand million stars, most of them old and yellowish. The galaxy is girded by a dense dust lane which obscures and reddens the light of stars behind it. Some younger, blue stars can be seen at the edges of the dust cloud. One of the nearer galaxies, 13 million light years away, Centaurus A is the most powerful nearby radio source and is also a copious source of X - and gamma rays as well as visible and infrared radiation

Centaurus A elliptical galaxy (NGC 5128) in the Centaurus - Galaxy Centaurus A (NGC 5128) - The galaxy NGC 5128 is located about 13 million years away from Earth. This Giant Galaxy is a powerful radio source known as Centaurus A. It is an active galaxy whose energy comes from a supermassive black hole. Image obtained from the 3.9m telescope of Siding Spring, Australia. Centaurus A is a most unusual galaxy. The circular, uniformly bright portion is composed of several thousand million stars, most of them old and yellowish. The galaxy is girded by a dense dust lane which obscures and reddens the light of stars behind it. Some younger, blue stars can be seen at the edges of the dust cloud. One of the nearer galaxies, 13 million light years away, Centaurus A is the most powerful nearby radio source and is also a copious source of X - and gamma rays as well as visible and infrared radiation

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Globular cluster Hodge 11 - Globular cluster Hodge 11 - This cluster of stars is located about 160,000 years ago - light in the Big Magellan Cloud

Globular cluster Hodge 11 - Globular cluster Hodge 11 - This cluster of stars is located about 160,000 years ago - light in the Big Magellan Cloud

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Central part of the galaxy cluster of the Virgin - The Virgo cluster. Detail - Part of the galaxy cluster of the Virgin centree on the elliptical galaxies M84 and M86

Central part of the galaxy cluster of the Virgin - The Virgo cluster. Detail - Part of the galaxy cluster of the Virgin centree on the elliptical galaxies M84 and M86

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Constellations de la Compsole, la Machine Pneumatica et les Voiles - Constellations Antlia, Pyxis and Vela - Constellations de l'hemisphere sud Antlia (originally Antlia Pneumatica, the Air Pump) is an unremarkable constellation invented by the Abbe Nicolas de Lacaille in the 1750s. It is hemmed in by the meandering body of Hydra to the north and the sparkling constellations of the Milky Way to the south. It contains a fine planetary nebula, NGC 3132 and a beautiful spiral galaxy, NGC 2997. Pyxis (Pyxis Nautica, the Mariner's Compasse) is the least interesting fragment of the great vessel Argo Navis, dismantled by Lacaille. The other parts are Puppis (the stern), Carina, (the keel) and Vela. Vela (the sails) is best known for the supernova remnant seen on large telescope pictures and the Gum nebula, visible as faint red nebulosity towards the right (west) of the constellation. Best seen in the early evening in March - April Other constellations in the image: Carina, Centaurus, Corvus,

Constellations de la Compsole, la Machine Pneumatica et les Voiles - Constellations Antlia, Pyxis and Vela - Constellations de l'hemisphere sud Antlia (originally Antlia Pneumatica, the Air Pump) is an unremarkable constellation invented by the Abbe Nicolas de Lacaille in the 1750s. It is hemmed in by the meandering body of Hydra to the north and the sparkling constellations of the Milky Way to the south. It contains a fine planetary nebula, NGC 3132 and a beautiful spiral galaxy, NGC 2997. Pyxis (Pyxis Nautica, the Mariner's Compasse) is the least interesting fragment of the great vessel Argo Navis, dismantled by Lacaille. The other parts are Puppis (the stern), Carina, (the keel) and Vela. Vela (the sails) is best known for the supernova remnant seen on large telescope pictures and the Gum nebula, visible as faint red nebulosity towards the right (west) of the constellation. Best seen in the early evening in March - April Other constellations in the image: Carina, Centaurus, Corvus,

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Nebula around the star R Aquarii - R Aquarii and its peculiar nebula - This star is actually a binary system composed of a giant red star (in the center) and a white dwarf (invisible in this photo). Image obtained by Siding Spring's 3.9m telescope. The star at the centre of this unique nebula has been known to be variable since 1810. It has a period of a little over a year, but the brightness shifts are erratic, ranging from the threshold of naked eye visibility to about 200 times fainter. At the centre of the nebula is a symbiotic star, an interacting pair consisting of a red giant and white dwarf. The dwarf draws in material from the giant, occasionally ejecting the surplus as the strange loops seen in the colour picture. The white dwarf itself is invisible and the light from the red dwarf is truly red, perhaps because the whole system is embedded in very dusty nebula which absorbs what blue light there is

Nebula around the star R Aquarii - R Aquarii and its peculiar nebula - This star is actually a binary system composed of a giant red star (in the center) and a white dwarf (invisible in this photo). Image obtained by Siding Spring's 3.9m telescope. The star at the centre of this unique nebula has been known to be variable since 1810. It has a period of a little over a year, but the brightness shifts are erratic, ranging from the threshold of naked eye visibility to about 200 times fainter. At the centre of the nebula is a symbiotic star, an interacting pair consisting of a red giant and white dwarf. The dwarf draws in material from the giant, occasionally ejecting the surplus as the strange loops seen in the colour picture. The white dwarf itself is invisible and the light from the red dwarf is truly red, perhaps because the whole system is embedded in very dusty nebula which absorbs what blue light there is

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Globular cluster NGC 6522 in Sagittarius - Globular cluster NGC 6522 in Sagittarius - This cluster of stars is located about 25,000 years - light from Earth towards the center of our galaxy

Globular cluster NGC 6522 in Sagittarius - Globular cluster NGC 6522 in Sagittarius - This cluster of stars is located about 25,000 years - light from Earth towards the center of our galaxy

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Around Baade's window - Around Baade's window - Stars field to the center of our galaxy. The bright star at the bottom of the image is Gamma of Sagittarius. The globular cluster in the center of the image is NGC 6522. Image obtained from the 1.2m Schmidt UK telescope of Siding Spring. The German - American astronomer Walter Baade selected for study a region of the crowded star fields in Sagittarius where he believed the Galactic dust obscuration was both uniform and minimal. He used this line of sight to establish the distance of the unseen Galactic centre, using variable stars as his yardstick. He found it to be about 30,000 light years away. This part of the sky, around the globular cluster NGC 6522, is now known as Baade's window. The brightest star in the photograph is gamma Sagittarii, a deep yellow, naked eye star of about third magnitude. It is in the foreground at a distance of about 100 light years

Around Baade's window - Around Baade's window - Stars field to the center of our galaxy. The bright star at the bottom of the image is Gamma of Sagittarius. The globular cluster in the center of the image is NGC 6522. Image obtained from the 1.2m Schmidt UK telescope of Siding Spring. The German - American astronomer Walter Baade selected for study a region of the crowded star fields in Sagittarius where he believed the Galactic dust obscuration was both uniform and minimal. He used this line of sight to establish the distance of the unseen Galactic centre, using variable stars as his yardstick. He found it to be about 30,000 light years away. This part of the sky, around the globular cluster NGC 6522, is now known as Baade's window. The brightest star in the photograph is gamma Sagittarii, a deep yellow, naked eye star of about third magnitude. It is in the foreground at a distance of about 100 light years

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Southern Crown Nebula - The Corona Australis nebula (NGC 6726 - 27 - 29) - R Coronae Australis is one of the closest and most intense star-forming regions; visible in the southern hemisphere, it is located about 500 years from Earth. R Coronae Australis is the star in the center of the image that illuminates a reddish nebula around it. Image obtained in Chile at the observatory of La Silla with the 2.2 meter MPG/ESO telescope. Image of R Coronae Australis region in the southern Milky Way, obtained with the Wide Field Imager (WFI) (camera) at the 2.2 - m MPG/ESO Telescope on La Silla (Chile). The R Coronae Australis complex of young stars and interstellar gas clouds is one of the nearest star - forming regions, at a distance of approx. 500 light - years from the Sun. It is seen in the southern constellation of that name (The “Southern Crown”). R Coronae Australis, the bright star from which the entire complex is named, is located at the center of the field and illuminates the reddish ne

Southern Crown Nebula - The Corona Australis nebula (NGC 6726 - 27 - 29) - R Coronae Australis is one of the closest and most intense star-forming regions; visible in the southern hemisphere, it is located about 500 years from Earth. R Coronae Australis is the star in the center of the image that illuminates a reddish nebula around it. Image obtained in Chile at the observatory of La Silla with the 2.2 meter MPG/ESO telescope. Image of R Coronae Australis region in the southern Milky Way, obtained with the Wide Field Imager (WFI) (camera) at the 2.2 - m MPG/ESO Telescope on La Silla (Chile). The R Coronae Australis complex of young stars and interstellar gas clouds is one of the nearest star - forming regions, at a distance of approx. 500 light - years from the Sun. It is seen in the southern constellation of that name (The “Southern Crown”). R Coronae Australis, the bright star from which the entire complex is named, is located at the center of the field and illuminates the reddish ne

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Remnants of the supernova Cassiopee A in X-rays - visible and infrared - This stunning picture of the supernova remnant Cassiopeia A (Cas A) is a composite of images taken by three of Nasa's Great Observatories. Infrared data from the Spitzer Space Telescope are colored red; optical data from the Hubble Space Telescope are yellow; and X - ray data from the Chandra X - ray Observatory are green and blue. Cas A is the 300 - year - old remnant created by the supernova explosion of a massive star. Each Great Observatory image highlights different characteristics of the remnant. Spitzer reveals warm dust in the outer shell with temperatures of about 10 degrees Celsius (80 degrees Fahrenheit), and Hubble sees the delicate filamentary structures of warmer gases about 10,000 degrees Celsius. Chandra shows hot gases at about 10 million degrees Celsius. This hot gas was created when ejected material from the supernova smashed into surrounding gas and dust at speeds of about ten million miles per

Remnants of the supernova Cassiopee A in X-rays - visible and infrared - This stunning picture of the supernova remnant Cassiopeia A (Cas A) is a composite of images taken by three of Nasa's Great Observatories. Infrared data from the Spitzer Space Telescope are colored red; optical data from the Hubble Space Telescope are yellow; and X - ray data from the Chandra X - ray Observatory are green and blue. Cas A is the 300 - year - old remnant created by the supernova explosion of a massive star. Each Great Observatory image highlights different characteristics of the remnant. Spitzer reveals warm dust in the outer shell with temperatures of about 10 degrees Celsius (80 degrees Fahrenheit), and Hubble sees the delicate filamentary structures of warmer gases about 10,000 degrees Celsius. Chandra shows hot gases at about 10 million degrees Celsius. This hot gas was created when ejected material from the supernova smashed into surrounding gas and dust at speeds of about ten million miles per

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