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Planetary nebula Abell 39 in Hercules - Planetary nebula Abell 39 - Abell 39, is a planetary nebula located about 7000 light years away from Earth in the constellation Hercules. Its diameter is 5 years - light. A planetary nebula is a shell of gas from a small star similar to our Sun that came at the end of its life, whose heart collapsed to become a white dwarf and which expelled the outer layers of its matter. Abell 39, the 39th entry in a catalog of large nebulae discovered by George Abell in 1966, is a beautiful example of a planetary nebula. The nebula has a diameter of about five light - years, and the thickness of the spherical shell is about a third of a light - year. The nebula itself is roughly 7,000 light - years from Earth in the constellation Hercules

Planetary nebula Abell 39 in Hercules - Planetary nebula Abell 39 - Abell 39, is a planetary nebula located about 7000 light years away from Earth in the constellation Hercules. Its diameter is 5 years - light. A planetary nebula is a shell of gas from a small star similar to our Sun that came at the end of its life, whose heart collapsed to become a white dwarf and which expelled the outer layers of its matter. Abell 39, the 39th entry in a catalog of large nebulae discovered by George Abell in 1966, is a beautiful example of a planetary nebula. The nebula has a diameter of about five light - years, and the thickness of the spherical shell is about a third of a light - year. The nebula itself is roughly 7,000 light - years from Earth in the constellation Hercules

Adam Block

PIX4623807

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

Artist's view of a planetary system in formation - Planetary system formation. Artwork - Artist's view of an exoplanet and his young star still surrounded by dust. Artwork showing an exoplanet with its young star and dust

Artist's view of a planetary system in formation - Planetary system formation. Artwork - Artist's view of an exoplanet and his young star still surrounded by dust. Artwork showing an exoplanet with its young star and dust

D. Ducros

PIX4574204

Life on an Exoplanet - Fructiferous world - View of an alien life artist on the surface of an exoplanet. A lush world occupied by bipedal fauna not too unlike those which have evolved on the Earth. This could even be the Earth itself, say 10 million years from now

Life on an Exoplanet - Fructiferous world - View of an alien life artist on the surface of an exoplanet. A lush world occupied by bipedal fauna not too unlike those which have evolved on the Earth. This could even be the Earth itself, say 10 million years from now

Walter B Myers

PIX4573328

The End of the Earth - Artist's View - Earth's end - Artist view: Artist view of the Earth in 4 billion years. The Sun, becoming a red giant, will make life impossible on Earth. As a red giant, the sun begins to melt the earth's surface

The End of the Earth - Artist's View - Earth's end - Artist view: Artist view of the Earth in 4 billion years. The Sun, becoming a red giant, will make life impossible on Earth. As a red giant, the sun begins to melt the earth's surface

Miller, Ron (b.1947)

PIX4669615

Planetary nebula NGC 3242 ultraviolet view - Planetary nebula NGC 3242 seen in ultraviolet - The planetary nebula NGC 3242, also called the ghost of Jupiter, ultraviolet view by the GALEX satellite. NGC 3242 is located between 1400 and 2500 years - light of the Earth, in the constellation Hydra (hydra, or female hydra). This ultraviolet image from NASA's Galaxy Evolution Explorer (GALEX) shows NGC 3242, a planetary nebula frequently referred to as “” Jupiter's Ghost.””” When stars with a mass similar to our sun approach the end of their lives by exhausting supplies of hydrogen and helium fuel in their cores, they swell up into cool red - giant stars. In a last gasp before death, they expel the layers of gas in their outer atmosphere. This exposes the core of the dying star, a dense hot ball of carbon and oxygen called a white dwarf. The white dwarf is so hot that it shines very brightly in the ultraviolet. The ultraviolet light from the white dwarf, in turn, ionizes the gaseous materia

Planetary nebula NGC 3242 ultraviolet view - Planetary nebula NGC 3242 seen in ultraviolet - The planetary nebula NGC 3242, also called the ghost of Jupiter, ultraviolet view by the GALEX satellite. NGC 3242 is located between 1400 and 2500 years - light of the Earth, in the constellation Hydra (hydra, or female hydra). This ultraviolet image from NASA's Galaxy Evolution Explorer (GALEX) shows NGC 3242, a planetary nebula frequently referred to as “” Jupiter's Ghost.””” When stars with a mass similar to our sun approach the end of their lives by exhausting supplies of hydrogen and helium fuel in their cores, they swell up into cool red - giant stars. In a last gasp before death, they expel the layers of gas in their outer atmosphere. This exposes the core of the dying star, a dense hot ball of carbon and oxygen called a white dwarf. The white dwarf is so hot that it shines very brightly in the ultraviolet. The ultraviolet light from the white dwarf, in turn, ionizes the gaseous materia

PIX4622984

Planetary nebula Shapley 1 in the Rule - The planetary nebula Shapley 1 - This planetary nebula is located about 1000 years ago - light. Image obtained from the 3.9m telescope of Siding Spring This is an unusual annular planetary nebula in Norma. The nebula itself appears quite small at a little over an arc minute in diameter, while its central star is a magnitude 14 white dwarf. This object is unusual because those planetaries that are not bipolar are more or less spherical shells of material thrown off by the central star as it undergoes an internal rearrangement. We often see them as thick annuli because we look through a greater thickness at the edge of the shell. However, Shapley 1 seems to be a true torus, a doughnut - shaped ring of material that we happen to see face - on around the central star. Sp - 1 is about 1000 light years distant

Planetary nebula Shapley 1 in the Rule - The planetary nebula Shapley 1 - This planetary nebula is located about 1000 years ago - light. Image obtained from the 3.9m telescope of Siding Spring This is an unusual annular planetary nebula in Norma. The nebula itself appears quite small at a little over an arc minute in diameter, while its central star is a magnitude 14 white dwarf. This object is unusual because those planetaries that are not bipolar are more or less spherical shells of material thrown off by the central star as it undergoes an internal rearrangement. We often see them as thick annuli because we look through a greater thickness at the edge of the shell. However, Shapley 1 seems to be a true torus, a doughnut - shaped ring of material that we happen to see face - on around the central star. Sp - 1 is about 1000 light years distant

PIX4623906

Remains of the supernova of the Sails - Detail - Vela supernova remnant. Detail - Detail of the rest of the supernova of the Sails. The supernova exploded 12,000 years ago. A supernova event marks the catastrophic end - point in the life of a massive star. The self - destruction of the star releases a huge amount of energy as radiation of all kinds, but a substantial fraction of the force of the explosion blasts the outer part of the supernova into an expanding shell of matter that travels through the almost empty space between the stars. As the rapidly moving blast wave encounters the relatively stationary interstellar medium it creates a very narrow, luminous shock front that appears as a faint nebula. Because the shock front is very convoluted the nebulosity appears to be highly structured and the various colours define different energy levels within the interaction. Although the star responsible for the Vela supernova remnant exploded 12,000 years ago, it is still affecting its env

Remains of the supernova of the Sails - Detail - Vela supernova remnant. Detail - Detail of the rest of the supernova of the Sails. The supernova exploded 12,000 years ago. A supernova event marks the catastrophic end - point in the life of a massive star. The self - destruction of the star releases a huge amount of energy as radiation of all kinds, but a substantial fraction of the force of the explosion blasts the outer part of the supernova into an expanding shell of matter that travels through the almost empty space between the stars. As the rapidly moving blast wave encounters the relatively stationary interstellar medium it creates a very narrow, luminous shock front that appears as a faint nebula. Because the shock front is very convoluted the nebulosity appears to be highly structured and the various colours define different energy levels within the interaction. Although the star responsible for the Vela supernova remnant exploded 12,000 years ago, it is still affecting its env

PIX4582820

Planetary nebula NGC 5189 in the Fly - NGC 5189, a weird planetary nebula - This nebula is located about 3000 years from Earth in the southern constellation of Fly. Image obtained from the 3.9m telescope of Siding Spring The peculiarity of NGC 5189 lies in its astonishingly complex structure, first noted by Sir John Herschel, who discovered it in 1835. Seen through the telescope it seems to have an 'S' shape, reminiscent of a barred spiral galaxy, hence its popular name. This is seen in the colour photograph as the central greenish part. Deep photographs such as this show many filaments, rather more reminiscent of the Crab nebula, a supernova remnant, than a planetary nebula. Unlike the Crab nebula, NGC 5189 is remarkably symmetrical. Distances to planetary nebulae are notoriously difficult to measure, but this one is estimated to be about 3000 light years away

Planetary nebula NGC 5189 in the Fly - NGC 5189, a weird planetary nebula - This nebula is located about 3000 years from Earth in the southern constellation of Fly. Image obtained from the 3.9m telescope of Siding Spring The peculiarity of NGC 5189 lies in its astonishingly complex structure, first noted by Sir John Herschel, who discovered it in 1835. Seen through the telescope it seems to have an 'S' shape, reminiscent of a barred spiral galaxy, hence its popular name. This is seen in the colour photograph as the central greenish part. Deep photographs such as this show many filaments, rather more reminiscent of the Crab nebula, a supernova remnant, than a planetary nebula. Unlike the Crab nebula, NGC 5189 is remarkably symmetrical. Distances to planetary nebulae are notoriously difficult to measure, but this one is estimated to be about 3000 light years away

PIX4623110

Urbilateria - Artist's view of an urbilateria, the common hypothetical ancestor of all bilateral animals, symmetrical in relation to the axis of their bodies. Urbilateria would have lived more than 600 million years ago. Artwork showing an urbilateria, the hypothetical last common ancestor of all bilaterians (all animals having a bilateral symmetry). Urbilateria could have lived 600 million - years ago

Urbilateria - Artist's view of an urbilateria, the common hypothetical ancestor of all bilateral animals, symmetrical in relation to the axis of their bodies. Urbilateria would have lived more than 600 million years ago. Artwork showing an urbilateria, the hypothetical last common ancestor of all bilaterians (all animals having a bilateral symmetry). Urbilateria could have lived 600 million - years ago

PIX4633189

Java Man or Pithecanthropus erectus (Homo Erectus erectus)

Java Man or Pithecanthropus erectus (Homo Erectus erectus)

TRK2629074

Artist's view of a planetary system in formation - Planetary system formation. Artwork - Artist's view of an exoplanet and his young star still surrounded by dust. Artwork showing an exoplanet with its young star and dust

Artist's view of a planetary system in formation - Planetary system formation. Artwork - Artist's view of an exoplanet and his young star still surrounded by dust. Artwork showing an exoplanet with its young star and dust

D. Ducros

PIX4574193

Glaciation on Earth and Early Moon - Artist's View - Snowball Earth and Early Moon - The Earth seen in a period of glaciation several billion years ago.

Glaciation on Earth and Early Moon - Artist's View - Snowball Earth and Early Moon - The Earth seen in a period of glaciation several billion years ago.

Miller, Ron (b.1947)

PIX4946788

Les Dentelles du Cygne - Detail - NGC 6960 - The Veil Nebula, NGC 6960 - Part of the rest of the supernova of the Dentelles du Swan lies about 1500 years - light from Earth. Ten thousand years ago a star exploded. The supernova remnant is called the Veil Nebula. Here is the west end of the Veil Nebula known as NGC 6960 or the Witch's Broom Nebula. The rampaging gas gains its colors by impacting and exciting existing nearby gas. The supernova remnant lies about 1,400 light - years away towards the constellation of Cygnus. The bright star 52 Cygnus is visible with the unaided eye from a dark location but unrelated to the ancient supernova. The filaments in the right upper portion of the image is commonly called Pickering's Triangle. It was discovered in 1904 by Williamina Fleming of the Harvard Observatory while examining photographic plates of the region. The object was named in honor of her boss, astronomer Edward Charles Pickering

Les Dentelles du Cygne - Detail - NGC 6960 - The Veil Nebula, NGC 6960 - Part of the rest of the supernova of the Dentelles du Swan lies about 1500 years - light from Earth. Ten thousand years ago a star exploded. The supernova remnant is called the Veil Nebula. Here is the west end of the Veil Nebula known as NGC 6960 or the Witch's Broom Nebula. The rampaging gas gains its colors by impacting and exciting existing nearby gas. The supernova remnant lies about 1,400 light - years away towards the constellation of Cygnus. The bright star 52 Cygnus is visible with the unaided eye from a dark location but unrelated to the ancient supernova. The filaments in the right upper portion of the image is commonly called Pickering's Triangle. It was discovered in 1904 by Williamina Fleming of the Harvard Observatory while examining photographic plates of the region. The object was named in honor of her boss, astronomer Edward Charles Pickering

Tom Davis

PIX4582769

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - The planetary nebula of Helice, located in Aquarius, is one of the closest to Earth (about 690 years - light) and is also one of the most extended; its apparent diameter is about half of the full moon. Image made with the 1.5m Danish telescope of La Silla in Chile in 2009. Helix is our closest planetary nebula at about 690 light years distance. Image taken with the ESO/Danish 1.5m telescope at La Silla observatory in Chile

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - The planetary nebula of Helice, located in Aquarius, is one of the closest to Earth (about 690 years - light) and is also one of the most extended; its apparent diameter is about half of the full moon. Image made with the 1.5m Danish telescope of La Silla in Chile in 2009. Helix is our closest planetary nebula at about 690 light years distance. Image taken with the ESO/Danish 1.5m telescope at La Silla observatory in Chile

PIX4623669

Reptile, illustration from 'The Zoology of the Voyage of H.M.S Beagle, 1832-36,'by Charles Darwin (1809-92) (litho) (b/w photo)

Reptile, illustration from 'The Zoology of the Voyage of H.M.S Beagle, 1832-36,'by Charles Darwin (1809-92) (litho) (b/w photo)

English School, (19th century)

XJF271666

From Big Bang to Today - Evolution of the Universe - Artist's view showing the stages of formation of the universe. This image represents the evolution of the Universe, starting with the Big Bang. The red arrow marks the flow of time

From Big Bang to Today - Evolution of the Universe - Artist's view showing the stages of formation of the universe. This image represents the evolution of the Universe, starting with the Big Bang. The red arrow marks the flow of time

PIX4634267

Kepler is the rest of a supernova that exploded about 400 years ago located about 13,000 light years from Earth in the constellation Ophiuchus. The X-ray image obtained by the Chandra space telescope highlights areas where the gas reaches the highest temperatures (in dark blue) - Kepler's supernova remnant, first seen 400 years ago by sky watchers, including famous astronomer Johannes Kepler. The Chandra X-ray data show regions of very hot gas, and extremely high-energy particles. Kepler's supernova, the last such object seen to explode in our Milky Way galaxy, resides about 13,000 light-years away in the constellation Ophiuchus. The Chandra observations were taken in June 2000: Remains of the supernova Kepler in Ophiuchus - Kepler's supernova remnant

Kepler is the rest of a supernova that exploded about 400 years ago located about 13,000 light years from Earth in the constellation Ophiuchus. The X-ray image obtained by the Chandra space telescope highlights areas where the gas reaches the highest temperatures (in dark blue) - Kepler's supernova remnant, first seen 400 years ago by sky watchers, including famous astronomer Johannes Kepler. The Chandra X-ray data show regions of very hot gas, and extremely high-energy particles. Kepler's supernova, the last such object seen to explode in our Milky Way galaxy, resides about 13,000 light-years away in the constellation Ophiuchus. The Chandra observations were taken in June 2000: Remains of the supernova Kepler in Ophiuchus - Kepler's supernova remnant

PIX4626462

Life on an exoplanet - Extraterrestrial life - View of an alien life artist on the surface of an exoplanet. If life is plentiful in the universe, there are likely inhabited planets that are part of multiple star systems

Life on an exoplanet - Extraterrestrial life - View of an alien life artist on the surface of an exoplanet. If life is plentiful in the universe, there are likely inhabited planets that are part of multiple star systems

Walter B Myers

PIX4573265

Binary Star - Artist View - Binary star. Artist view - Binary Star - mass exchange between a red giant a blue dwarf. When the material removed from the giant comes into contact with the accretion disc of the blue dwarf, it emits X-rays visible in the form of flashes by astronomers. This mass exchange process leads in a few thousand years to a nova explosion. Mass transfer between a red giant and a blue dwarf star producing X - ray emission and later a nova explosion

Binary Star - Artist View - Binary star. Artist view - Binary Star - mass exchange between a red giant a blue dwarf. When the material removed from the giant comes into contact with the accretion disc of the blue dwarf, it emits X-rays visible in the form of flashes by astronomers. This mass exchange process leads in a few thousand years to a nova explosion. Mass transfer between a red giant and a blue dwarf star producing X - ray emission and later a nova explosion

P. Carril

PIX4572585

Binary Star - Artist View - Binary star. Artist view - A white dwarf orbiting very close to her giant red companion tears him little by little from the material. This unstable couple will soon explode in supernova. Mass transfer between a red giant and a white dwarf star producing later a supernova explosion

Binary Star - Artist View - Binary star. Artist view - A white dwarf orbiting very close to her giant red companion tears him little by little from the material. This unstable couple will soon explode in supernova. Mass transfer between a red giant and a white dwarf star producing later a supernova explosion

P. Carril

PIX4572634

The End of the Earth - Artist's View - Earth's end - Artist view - Artist view from the Earth in 4 billion years. The Sun, becoming a red giant, will make life impossible on Earth. In about six billion years our sun is expected to dramatically expand and grow hotter as its helium core contracts and ignites the outer layers of hydrogen, eventually becoming a type of star called a “Red Giant.” In this image the Sun has just started its journey toward becoming a Red Giant, however the intense heat has already boiled off Earth's oceans and driven away most of the atmosphere leaving a lifeless, molten surface. The Sun will continue to bloom for the next few hundred million years until it fills the sky and eventually engulfs the Earth entirely

The End of the Earth - Artist's View - Earth's end - Artist view - Artist view from the Earth in 4 billion years. The Sun, becoming a red giant, will make life impossible on Earth. In about six billion years our sun is expected to dramatically expand and grow hotter as its helium core contracts and ignites the outer layers of hydrogen, eventually becoming a type of star called a “Red Giant.” In this image the Sun has just started its journey toward becoming a Red Giant, however the intense heat has already boiled off Earth's oceans and driven away most of the atmosphere leaving a lifeless, molten surface. The Sun will continue to bloom for the next few hundred million years until it fills the sky and eventually engulfs the Earth entirely

Walter B Myers

PIX4633532

The skull of the prehistoric man Australopithecus with an upper arm skeleton (photo)

The skull of the prehistoric man Australopithecus with an upper arm skeleton (photo)

Fotoreport Johann Wolfgang Goehthe-Universität

DPA6202381

Neanderthal man - Neanderthal man - Group of Neanderthal men (Homo neanderthalensis) hunting. The Neanderthals lived in Europe and Western Asia in the Middle Paleolithic, between about 250,000 and 28,000 years BC. A tribe of Neanderthal men (Homo neanderthalensis) hunting. This hominid inhabited Europe and parts of western Asia between 250,000 and 28,000 years ago

Neanderthal man - Neanderthal man - Group of Neanderthal men (Homo neanderthalensis) hunting. The Neanderthals lived in Europe and Western Asia in the Middle Paleolithic, between about 250,000 and 28,000 years BC. A tribe of Neanderthal men (Homo neanderthalensis) hunting. This hominid inhabited Europe and parts of western Asia between 250,000 and 28,000 years ago

Gregoire Cirade

PIX4675747

Mars with water - Artist's view - Wet Mars - Artwork: More than three billion years ago, water flowed on Mars. The water is now evaporated. This illustration can also illustrate the terraformation of Mars. 3.5 billion years ago Mars had water.

Mars with water - Artist's view - Wet Mars - Artwork: More than three billion years ago, water flowed on Mars. The water is now evaporated. This illustration can also illustrate the terraformation of Mars. 3.5 billion years ago Mars had water.

PIX4616947

Life on an exoplanet - Silicon life on an exoplanet: Silicon-based alien life forms. All known life on Earth is built upon carbon and carbon-based compounds. Yet the possibility has been discussed that life elsewhere may have a different chemical foundation - one based on the element silicon

Life on an exoplanet - Silicon life on an exoplanet: Silicon-based alien life forms. All known life on Earth is built upon carbon and carbon-based compounds. Yet the possibility has been discussed that life elsewhere may have a different chemical foundation - one based on the element silicon

Miller, Ron (b.1947)

PIX4607788

Remains of the supernova of the Sails - Detail - Vela supernova remnant. Detail - Detail of the rest of the supernova of the Sails. The supernova exploded 12,000 years ago. A supernova event marks the catastrophic end - point in the life of a massive star. The self - destruction of the star releases a huge amount of energy as radiation of all kinds, but a substantial fraction of the force of the explosion blasts the outer part of the supernova into an expanding shell of matter that travels through the almost empty space between the stars. As the rapidly moving blast wave encounters the relatively stationary interstellar medium it creates a very narrow, luminous shock front that appears as a faint nebula. Because the shock front is very convoluted the nebulosity appears to be highly structured and the various colours define different energy levels within the interaction. Although the star responsible for the Vela supernova remnant exploded 12,000 years ago, it is still affecting its env

Remains of the supernova of the Sails - Detail - Vela supernova remnant. Detail - Detail of the rest of the supernova of the Sails. The supernova exploded 12,000 years ago. A supernova event marks the catastrophic end - point in the life of a massive star. The self - destruction of the star releases a huge amount of energy as radiation of all kinds, but a substantial fraction of the force of the explosion blasts the outer part of the supernova into an expanding shell of matter that travels through the almost empty space between the stars. As the rapidly moving blast wave encounters the relatively stationary interstellar medium it creates a very narrow, luminous shock front that appears as a faint nebula. Because the shock front is very convoluted the nebulosity appears to be highly structured and the various colours define different energy levels within the interaction. Although the star responsible for the Vela supernova remnant exploded 12,000 years ago, it is still affecting its env

PIX4582885

Artist's view of a planetary system in formation - Planetary system formation. Artwork: Artist's view of a young star surrounded by a protoplanetary disc. Artwork showing exoplanets in fusion with their young star and dust

Artist's view of a planetary system in formation - Planetary system formation. Artwork: Artist's view of a young star surrounded by a protoplanetary disc. Artwork showing exoplanets in fusion with their young star and dust

Miller, Ron (b.1947)

PIX4574220

Life on a high gravity exoplanet - Life on a high gravity world

Life on a high gravity exoplanet - Life on a high gravity world

Miller, Ron (b.1947)

PIX4607771

Planetary nebula NGC 5189 in the Fly - NGC 5189 - Planetary nebula in Musca - This nebula is located about 3000 light years from Earth in the southern constellation of Fly. Image obtained by the Gemini telescope. NGC 5189 is a planetary nebula. At the end of its life, a star with a mass less than eight times that of the Sun will blow its outer layers away, giving rise to a planetary nebula. Some of these stellar puffballs are almost round, resembling huge soap bubbles or giant planets (hence the name), but others, such as NGC 5189 are more intricate. In particular, this planetary nebula exhibits a curious S” - shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on. The details of the physical processes producing such a complex symmetry from a simple, spherical star are still the object of astronomical controversy. One possibility is that the star has a very close (but unseen) companion. Over time the orbits dri

Planetary nebula NGC 5189 in the Fly - NGC 5189 - Planetary nebula in Musca - This nebula is located about 3000 light years from Earth in the southern constellation of Fly. Image obtained by the Gemini telescope. NGC 5189 is a planetary nebula. At the end of its life, a star with a mass less than eight times that of the Sun will blow its outer layers away, giving rise to a planetary nebula. Some of these stellar puffballs are almost round, resembling huge soap bubbles or giant planets (hence the name), but others, such as NGC 5189 are more intricate. In particular, this planetary nebula exhibits a curious S” - shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on. The details of the physical processes producing such a complex symmetry from a simple, spherical star are still the object of astronomical controversy. One possibility is that the star has a very close (but unseen) companion. Over time the orbits dri

PIX4623091

Universe children of other Universe - Multiple universes - Artist view of multiple Universe

Universe children of other Universe - Multiple universes - Artist view of multiple Universe

PIX4634391

Life on a low gravity exoplanet - Life on a low gravity world

Life on a low gravity exoplanet - Life on a low gravity world

Miller, Ron (b.1947)

PIX4607766

Life on an Exoplanet: View of an alien life artist on the surface of an exoplanet orbiting a class F star. Extraterrestrial life on an exoplanet orbiting a F-type star

Life on an Exoplanet: View of an alien life artist on the surface of an exoplanet orbiting a class F star. Extraterrestrial life on an exoplanet orbiting a F-type star

Miller, Ron (b.1947)

PIX4607725

Les Dentelles du Cygne - Detail - NGC 6960 - Part of the Veil nebula - NGC 6960 - Part of the rest of the supernova of the Dentelles du Swan lies about 1500 years - light from the Earth. The bright star is 52 Cygnus, a star visible to the naked eye that is not associated with lace. Image obtained with a telescope 61 cm in diameter. The Veil Nebula (NGC 6960) is part of a supernova remnant known as the Cygnus Loop. It is the shattered remains of one, and possibly two, supernovae that exploded less than 10,000 years ago in the direction of the constellation Cygnus, the Swan. At the time of the explosion, it would have been seen as a very bright star, rivaling the crescent Moon. The bright star near the center of the image, known as 52 Cygnus, is not associated with the supernova. Image taken with a 24 - inch telescope

Les Dentelles du Cygne - Detail - NGC 6960 - Part of the Veil nebula - NGC 6960 - Part of the rest of the supernova of the Dentelles du Swan lies about 1500 years - light from the Earth. The bright star is 52 Cygnus, a star visible to the naked eye that is not associated with lace. Image obtained with a telescope 61 cm in diameter. The Veil Nebula (NGC 6960) is part of a supernova remnant known as the Cygnus Loop. It is the shattered remains of one, and possibly two, supernovae that exploded less than 10,000 years ago in the direction of the constellation Cygnus, the Swan. At the time of the explosion, it would have been seen as a very bright star, rivaling the crescent Moon. The bright star near the center of the image, known as 52 Cygnus, is not associated with the supernova. Image taken with a 24 - inch telescope

PIX4582737

Photograph of the supposed Westall UFO encounter

Photograph of the supposed Westall UFO encounter

UIG3520531

Triton could break and form a new ring - Triton could break to give Neptune a new rings system.: Neptune and Triton- Illustration - Neptune with its moon Triton. Artwork

Triton could break and form a new ring - Triton could break to give Neptune a new rings system.: Neptune and Triton- Illustration - Neptune with its moon Triton. Artwork

S. Numazawa

PIX4623948

Homo Sapiens Neanderthalensis, c. 45,000 years old, found in Spy, Belgium (bone)

Homo Sapiens Neanderthalensis, c. 45,000 years old, found in Spy, Belgium (bone)

STF257391

Lorenzo Oken (b/w photo)

Lorenzo Oken (b/w photo)

European Photographer, (19th century)

LLM5998276

Prehistoric animals, 1833-39 (coloured engraving)

Prehistoric animals, 1833-39 (coloured engraving)

French School, (19th century)

PRX999073

Charles Robert Darwin (1809-82) 1849 (litho)

Charles Robert Darwin (1809-82) 1849 (litho)

Maguire, Thomas Herbert (1821-95) (after)

TRI98482

Hands holding a primitive tool and a stone (pencil on paper)

Hands holding a primitive tool and a stone (pencil on paper)

XZL151543

Homo Sapiens Steinheimensis, c.250,000 years old, found in Steinheim, Germany (bone)

Homo Sapiens Steinheimensis, c.250,000 years old, found in Steinheim, Germany (bone)

STF257388

The amoeba (litho)

The amoeba (litho)

English School, (20th century)

LLM5998254

Evolution, 2007, Joel Barr (oil on canvas)

premium — Evolution, 2007, Joel Barr (oil on canvas)

Evolution, 2007, Joel Barr (oil on canvas)

Barr, Joel (b.1946)

SSI2219452

The Earth seen in a period of glaciation several billion years ago.

The Earth seen in a period of glaciation several billion years ago.

Miller, Ron (b.1947)

PIX4669655

Planetary nebula NGC 6781 - A planetary nebula, NGC 6781 - This fairly inconspicuous planetary nebula is in Aquila and it marks the end of the long life of a sun - like star. Despite the longevity of their parent stars and the very brief lifetime of the nebula (typically less than 100,000 years) such sights are common because sun - like stars are common. The nebula has nothing to do with planet formation, indeed the formation of the nebula would effectively destroy any planets the parent star had, rather the name refers to the telescopic appearance of the nebula. Some planetaries are very bright and their discs look like solar system planets. A close look at this picture shows some structure in the expanding shell of gas around the star, reminiscent of the much more complex Helix nebula. The nebula we see is the ejected surface of the star expanding into material left from an earlier stage in its decline, when it briefly expanded as a 'red giant'. Irregularities in the earlier ejecta,

Planetary nebula NGC 6781 - A planetary nebula, NGC 6781 - This fairly inconspicuous planetary nebula is in Aquila and it marks the end of the long life of a sun - like star. Despite the longevity of their parent stars and the very brief lifetime of the nebula (typically less than 100,000 years) such sights are common because sun - like stars are common. The nebula has nothing to do with planet formation, indeed the formation of the nebula would effectively destroy any planets the parent star had, rather the name refers to the telescopic appearance of the nebula. Some planetaries are very bright and their discs look like solar system planets. A close look at this picture shows some structure in the expanding shell of gas around the star, reminiscent of the much more complex Helix nebula. The nebula we see is the ejected surface of the star expanding into material left from an earlier stage in its decline, when it briefly expanded as a 'red giant'. Irregularities in the earlier ejecta,

PIX4623396

Supernova 1993J exploding (artist's impression) - In 1993 the supernova SN 1993J appeared in the galaxy M81. The illustration shows the supergiant red star exploding after transferring a huge mass of hydrogen to its companion star (right). In this artist's view the red supergiant supernova progenitor star (left) is exploding after having transferred about 10 solar masses of hydrogen gas to the blue companion star (right). This interaction process happened over about 250 years and affected the supernova explosion to such an extent that SN 1993J was later known as one of the most peculiar supernovae ever seen

Supernova 1993J exploding (artist's impression) - In 1993 the supernova SN 1993J appeared in the galaxy M81. The illustration shows the supergiant red star exploding after transferring a huge mass of hydrogen to its companion star (right). In this artist's view the red supergiant supernova progenitor star (left) is exploding after having transferred about 10 solar masses of hydrogen gas to the blue companion star (right). This interaction process happened over about 250 years and affected the supernova explosion to such an extent that SN 1993J was later known as one of the most peculiar supernovae ever seen

PIX4583292

Detail of the Swan Lace - NGC 6992 - 6995 part of the Veil nebula - NGC 6992 and NGC 6995, parts of the Swan lace, a remnant of supernova located in the constellation Swan. NGC 6992/5 is part of the remnant of a supernova explosion that occurred about 5 - 10,000 years ago. It is the brighter, eastern half of the much larger Veil Nebula. It is located 1,500 light years away in the constellation Cygnus

Detail of the Swan Lace - NGC 6992 - 6995 part of the Veil nebula - NGC 6992 and NGC 6995, parts of the Swan lace, a remnant of supernova located in the constellation Swan. NGC 6992/5 is part of the remnant of a supernova explosion that occurred about 5 - 10,000 years ago. It is the brighter, eastern half of the much larger Veil Nebula. It is located 1,500 light years away in the constellation Cygnus

R. Gendler

PIX4582557

Scenario of the formation of a star - Scenario of the formation of a star. From left to right: 1. Interstellar gas and dust cloud, zooming on a blood cell. 2. Contraction and warming of the blood cell. 3. The blood cell flattened around the young star. 4. young star. Left is a cloud of gaz and interstellar dust. Inside is a dark globule which will contract to create a rotating disk flattening, at the center of this disk, the stars ingnites

Scenario of the formation of a star - Scenario of the formation of a star. From left to right: 1. Interstellar gas and dust cloud, zooming on a blood cell. 2. Contraction and warming of the blood cell. 3. The blood cell flattened around the young star. 4. young star. Left is a cloud of gaz and interstellar dust. Inside is a dark globule which will contract to create a rotating disk flattening, at the center of this disk, the stars ingnites

P. Carril

PIX4572917

Quasar - Illustration - Infant Galaxy - Illustration - Artist's view of a young spiral galaxy. In the early days of a spiral galaxy like our own, a quasar blazes in the nucleus, while the spiral arms, glowing with fluorescent gasse, are just beginning to form stars

Quasar - Illustration - Infant Galaxy - Illustration - Artist's view of a young spiral galaxy. In the early days of a spiral galaxy like our own, a quasar blazes in the nucleus, while the spiral arms, glowing with fluorescent gasse, are just beginning to form stars

PIX4613966

Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is at a distance of about 5,400 light - years away from Earth with an estimated age of about 300 million years. It contains about 500 stars of which 150 are bright. Planetary nebula NGC 2438 (top) doesn't seem to belong to the cluster

Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is at a distance of about 5,400 light - years away from Earth with an estimated age of about 300 million years. It contains about 500 stars of which 150 are bright. Planetary nebula NGC 2438 (top) doesn't seem to belong to the cluster

Jim Misti

PIX4568059

Planetary nebula Helix (NGC 7293) in Aquarius - Helix planetary nebula (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) in Aquarius. This nebula is located 690 years of light from Earth. The Helix is a planetary nebula, the glowing gaseous envelope expelled by a dying, sun - like star. The Helix, located 690 light - years away, is one of the closest planetary nebulas to Eart

Planetary nebula Helix (NGC 7293) in Aquarius - Helix planetary nebula (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) in Aquarius. This nebula is located 690 years of light from Earth. The Helix is a planetary nebula, the glowing gaseous envelope expelled by a dying, sun - like star. The Helix, located 690 light - years away, is one of the closest planetary nebulas to Eart

Sebastian Voltmer

PIX4623707

Supernova 1987A 4 years after - Supernova 1987A after 4 years - Image obtained with Siding Spring's 3.9m telescope. Supernova 1987A appeared in the constellation of Dorado on February 23, 1987. 4 years later the star appears as a red dot and pulls. The elongated red 'star' marks the site of supernova 1987A in the Large Magellanic Cloud (LMC). The two blue stars that bracket the glowing ember are almost certainly in the LMC as well, but not necessarily near the supernova. They initially confused the issue of which star had exploded. The red image is the expanding remnant of a massive star and can be seen to be slightly elongated in this picture. The elongation is in the same direction as the well - known Hubble Space Telescope picture of the ellipse around the supernova and both represent the expanding shock wave from the supernova interacting with material that was ejected from the star before it exploded

Supernova 1987A 4 years after - Supernova 1987A after 4 years - Image obtained with Siding Spring's 3.9m telescope. Supernova 1987A appeared in the constellation of Dorado on February 23, 1987. 4 years later the star appears as a red dot and pulls. The elongated red 'star' marks the site of supernova 1987A in the Large Magellanic Cloud (LMC). The two blue stars that bracket the glowing ember are almost certainly in the LMC as well, but not necessarily near the supernova. They initially confused the issue of which star had exploded. The red image is the expanding remnant of a massive star and can be seen to be slightly elongated in this picture. The elongation is in the same direction as the well - known Hubble Space Telescope picture of the ellipse around the supernova and both represent the expanding shock wave from the supernova interacting with material that was ejected from the star before it exploded

PIX4582403

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

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

PIX4622995

Star cluster M46 and planetary nebula NGC 2438 in the stern Open cluster M46 with Planetary Nebula NGC 2438 in Puppis - M46 (NGC 2437) is a cluster of stars aged 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is at a distance of about 5,400 light - years away from Earth with an estimated age of about 300 million years. It contains about 500 stars of which 150 are bright. Planetary nebula NGC 2438 (middle bottom) doesn't seem to belong to the cluster

Star cluster M46 and planetary nebula NGC 2438 in the stern Open cluster M46 with Planetary Nebula NGC 2438 in Puppis - M46 (NGC 2437) is a cluster of stars aged 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. M46 (NGC 2437) is at a distance of about 5,400 light - years away from Earth with an estimated age of about 300 million years. It contains about 500 stars of which 150 are bright. Planetary nebula NGC 2438 (middle bottom) doesn't seem to belong to the cluster

PIX4568034

Homo Erectus, c.700,000 years old, found in Trinil, Java, Indonesia (bone)

Homo Erectus, c.700,000 years old, found in Trinil, Java, Indonesia (bone)

STF257379

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 450 years - light from Earth. Image obtained by a 50 cm telescope, 42 poses of 15 minutes accumulated. Located in the constellation of Aquarius, the Helix is our closest planetary nebula at only 450 light years distance. It is so close that it can be telescopically seen shifting one side to the other in front of the more distant background stars as the earth moves around the sun - a phenomenon called parallax. Parallax measurements are used to trigonometrically deduce distance between an object in space and the earth. A planetary nebula results when a red giant star, near the ends of it's productive life, sheds its outer layers into space and creates a breathtaking shell of surrounding gas that early visual astronomers likened to the disks of planets. This planetary spans approximately 1.5 light years and is still expanding. The name associated with the Helix is derived from the c

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 450 years - light from Earth. Image obtained by a 50 cm telescope, 42 poses of 15 minutes accumulated. Located in the constellation of Aquarius, the Helix is our closest planetary nebula at only 450 light years distance. It is so close that it can be telescopically seen shifting one side to the other in front of the more distant background stars as the earth moves around the sun - a phenomenon called parallax. Parallax measurements are used to trigonometrically deduce distance between an object in space and the earth. A planetary nebula results when a red giant star, near the ends of it's productive life, sheds its outer layers into space and creates a breathtaking shell of surrounding gas that early visual astronomers likened to the disks of planets. This planetary spans approximately 1.5 light years and is still expanding. The name associated with the Helix is derived from the c

R. Jay GaBany

PIX4623639

Supernova Remnants SNR B0509 - 67.5 - Supernova Remnant SNR B0509 - 67.5 - SNR B0509 - 67.5 (or SNR 0509) is the rest of a star explosion in the galaxy of the Great Magellan Cloud. This 23-year bubble - light of diameter extends at a speed of 18 million km/h. Composite of images obtained by the Hubble Space Telescope (HST) in 2006 and 2010. This delicate shell, photographed by the NASA/ESA Hubble Space Telescope, appears to float serenely in the depths of space, but this apparent calm hides an inner turmoil. The gaseous envelope formed as the expanding blast wave and ejected material from a supernova tore through the nearby interstellar medium. Called SNR B0509 - 67.5 (or SNR 0509 for short), the bubble is the visible remnant of a powerful stellar explosion in the Large Magellanic Cloud (LMC), a small galaxy about 160,000 light - years from Earth. Ripples in the shell's surface may be caused either by subtle variations in the density of the ambient interstellar gas, or possibly be driv

Supernova Remnants SNR B0509 - 67.5 - Supernova Remnant SNR B0509 - 67.5 - SNR B0509 - 67.5 (or SNR 0509) is the rest of a star explosion in the galaxy of the Great Magellan Cloud. This 23-year bubble - light of diameter extends at a speed of 18 million km/h. Composite of images obtained by the Hubble Space Telescope (HST) in 2006 and 2010. This delicate shell, photographed by the NASA/ESA Hubble Space Telescope, appears to float serenely in the depths of space, but this apparent calm hides an inner turmoil. The gaseous envelope formed as the expanding blast wave and ejected material from a supernova tore through the nearby interstellar medium. Called SNR B0509 - 67.5 (or SNR 0509 for short), the bubble is the visible remnant of a powerful stellar explosion in the Large Magellanic Cloud (LMC), a small galaxy about 160,000 light - years from Earth. Ripples in the shell's surface may be caused either by subtle variations in the density of the ambient interstellar gas, or possibly be driv

PIX4583175

Supernova 1987A - Supernova 1987A - Image of the Supernova 1987A, obtained on March 8, 1987 with the 3.9m telescope of Siding Spring. Supernova 1987A appeared in the constellation Doradus on February 23, 1987. Sometime during 23 February 1987 a supernova exploded in the Large Magellanic Cloud (LMC), a nearby galaxy. However, the LMC is about 170,000 light years distant, so the supernova exploded 170,000 years ago. It was discovered the following day and brightened rapidly to become the first supernova to be easily visible to the unaided eye for almost 400 years. This photograph shows the field around the site of the supernova in great detail about 10 days afterwards, when it was still brightening

Supernova 1987A - Supernova 1987A - Image of the Supernova 1987A, obtained on March 8, 1987 with the 3.9m telescope of Siding Spring. Supernova 1987A appeared in the constellation Doradus on February 23, 1987. Sometime during 23 February 1987 a supernova exploded in the Large Magellanic Cloud (LMC), a nearby galaxy. However, the LMC is about 170,000 light years distant, so the supernova exploded 170,000 years ago. It was discovered the following day and brightened rapidly to become the first supernova to be easily visible to the unaided eye for almost 400 years. This photograph shows the field around the site of the supernova in great detail about 10 days afterwards, when it was still brightening

PIX4582335

Planetary nebula NGC 1360 in the Furnace - NGC 1360, the diffuse planetary nebula in Fornax - Image obtained by Siding Spring Planetary nebulae 3.9m telescope usually have well - defined boundaries, sometimes even a shell - like structure. For reasons that are not understood, NGC 1360 defies all these conventions, yet its colour still clearly identifies it as a planetary nebula. The green hue is oxygen, excited by the hot central star, and to the north - east of the nebula is a faint red smudge, probably traces of material ejected before the star became a true planetary nebula

Planetary nebula NGC 1360 in the Furnace - NGC 1360, the diffuse planetary nebula in Fornax - Image obtained by Siding Spring Planetary nebulae 3.9m telescope usually have well - defined boundaries, sometimes even a shell - like structure. For reasons that are not understood, NGC 1360 defies all these conventions, yet its colour still clearly identifies it as a planetary nebula. The green hue is oxygen, excited by the hot central star, and to the north - east of the nebula is a faint red smudge, probably traces of material ejected before the star became a true planetary nebula

PIX4622912

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