(CNN)While astronomers estimate that the Andromeda galaxy will collide with our own Milky Way galaxy 8 billion years from now, they now believe that another collision will happen even sooner.

A mysterious bright object in the sky, dubbed "The Cow," was captured in real time by telescopes around the world. Astronomers believe that it could be the birth of a black hole or neutron star, or a new class of object.A mysterious bright object in the sky, dubbed "The Cow," was captured in real time by telescopes around the world. Astronomers believe that it could be the birth of a black hole or neutron star, or a new class of object. Photos: Wonders of the universeA mysterious bright object in the sky, dubbed “The Cow,” was captured in real time by telescopes around the world. Astronomers believe that it could be the birth of a black hole or neutron star, or a new class of object.Hide Caption 1 of 80An illustration depicts the detection of a repeating fast radio burst from a mysterious source 3 billion light-years from Earth. An illustration depicts the detection of a repeating fast radio burst from a mysterious source 3 billion light-years from Earth. Photos: Wonders of the universeAn illustration depicts the detection of a repeating fast radio burst from a mysterious source 3 billion light-years from Earth. Hide Caption 2 of 80This is an artist's illustration off the most distant solar system object yet observed, 2018 VG18 -- also known as "Farout." The pink hue suggests the presence of ice.This is an artist's illustration off the most distant solar system object yet observed, 2018 VG18 -- also known as "Farout." The pink hue suggests the presence of ice. Photos: Wonders of the universeThis is an artist’s illustration off the most distant solar system object yet observed, 2018 VG18 — also known as “Farout.” The pink hue suggests the presence of ice.Hide Caption 3 of 80Comet 46P/Wirtanen will pass within 7 million miles of Earth on December 16. It's ghostly green coma is the size of Jupiter, even though the comet itself is about three-quarters of a mile in diameter.Comet 46P/Wirtanen will pass within 7 million miles of Earth on December 16. It's ghostly green coma is the size of Jupiter, even though the comet itself is about three-quarters of a mile in diameter. Photos: Wonders of the universeComet 46P/Wirtanen will pass within 7 million miles of Earth on December 16. It’s ghostly green coma is the size of Jupiter, even though the comet itself is about three-quarters of a mile in diameter.Hide Caption 4 of 80This mosaic image of asteroid Bennu is composed of 12 PolyCam images collected on December 2 by the OSIRIS-REx spacecraft from a range of 15 miles.This mosaic image of asteroid Bennu is composed of 12 PolyCam images collected on December 2 by the OSIRIS-REx spacecraft from a range of 15 miles. Photos: Wonders of the universeThis mosaic image of asteroid Bennu is composed of 12 PolyCam images collected on December 2 by the OSIRIS-REx spacecraft from a range of 15 miles.Hide Caption 5 of 80This image of a globular cluster of stars by the Hubble Space Telescope is one of the most ancient collections of stars known. The cluster, called NGC 6752, is more than 10 billion years old. This image of a globular cluster of stars by the Hubble Space Telescope is one of the most ancient collections of stars known. The cluster, called NGC 6752, is more than 10 billion years old. Photos: Wonders of the universeThis image of a globular cluster of stars by the Hubble Space Telescope is one of the most ancient collections of stars known. The cluster, called NGC 6752, is more than 10 billion years old. Hide Caption 6 of 80An image of Apep captured with the VISIR camera on the European Southern Observatory's Very Large Telescope. This "pinwheel" star system is most likely doomed to end in a long-duration gamma-ray burst.An image of Apep captured with the VISIR camera on the European Southern Observatory's Very Large Telescope. This "pinwheel" star system is most likely doomed to end in a long-duration gamma-ray burst. Photos: Wonders of the universeAn image of Apep captured with the VISIR camera on the European Southern Observatory’s Very Large Telescope. This “pinwheel” star system is most likely doomed to end in a long-duration gamma-ray burst.Hide Caption 7 of 80An artist's impression of galaxy Abell 2597, showing the supermassive black hole expelling cold molecular gas like the pump of a giant intergalactic fountain.An artist's impression of galaxy Abell 2597, showing the supermassive black hole expelling cold molecular gas like the pump of a giant intergalactic fountain. Photos: Wonders of the universeAn artist’s impression of galaxy Abell 2597, showing the supermassive black hole expelling cold molecular gas like the pump of a giant intergalactic fountain.Hide Caption 8 of 80An image of the Wild Duck Cluster, where every star is roughly 250 million years old.An image of the Wild Duck Cluster, where every star is roughly 250 million years old. Photos: Wonders of the universeAn image of the Wild Duck Cluster, where every star is roughly 250 million years old.Hide Caption 9 of 80These images reveal the final stage of a union between pairs of galactic nuclei in the messy cores of colliding galaxies. These images reveal the final stage of a union between pairs of galactic nuclei in the messy cores of colliding galaxies. Photos: Wonders of the universeThese images reveal the final stage of a union between pairs of galactic nuclei in the messy cores of colliding galaxies. Hide Caption 10 of 80A radio image of hydrogen gas in the Small Magellanic Cloud. Astronomers believe that the dwarf galaxy is slowly dying and will eventually be consumed by the Milky Way. A radio image of hydrogen gas in the Small Magellanic Cloud. Astronomers believe that the dwarf galaxy is slowly dying and will eventually be consumed by the Milky Way. Photos: Wonders of the universeA radio image of hydrogen gas in the Small Magellanic Cloud. Astronomers believe that the dwarf galaxy is slowly dying and will eventually be consumed by the Milky Way. Hide Caption 11 of 80Further evidence of a supermassive black hole at the center of the Milky Way galaxy has been found. This visualization uses data from simulations of orbital motions of gas swirling around about 30% of the speed of light on a circular orbit around the black hole.Further evidence of a supermassive black hole at the center of the Milky Way galaxy has been found. This visualization uses data from simulations of orbital motions of gas swirling around about 30% of the speed of light on a circular orbit around the black hole. Photos: Wonders of the universeFurther evidence of a supermassive black hole at the center of the Milky Way galaxy has been found. This visualization uses data from simulations of orbital motions of gas swirling around about 30% of the speed of light on a circular orbit around the black hole.Hide Caption 12 of 80Does this look like a bat to you? This giant shadow comes from a bright star reflecting against the dusty disk surrounding it.Does this look like a bat to you? This giant shadow comes from a bright star reflecting against the dusty disk surrounding it. Photos: Wonders of the universeDoes this look like a bat to you? This giant shadow comes from a bright star reflecting against the dusty disk surrounding it.Hide Caption 13 of 80Hey, Bennu! NASA's OSIRIS-REx mission, on its way to meet the primitive asteroid Bennu, is sending back images as it gets closer to its December 3 target.Hey, Bennu! NASA's OSIRIS-REx mission, on its way to meet the primitive asteroid Bennu, is sending back images as it gets closer to its December 3 target. Photos: Wonders of the universeHey, Bennu! NASA’s OSIRIS-REx mission, on its way to meet the primitive asteroid Bennu, is sending back images as it gets closer to its December 3 target.Hide Caption 14 of 80These three panels reveal a supernova before, during and after it happened 920 million light-years from Earth(from left to right). The supernova, dubbed iPTF14gqr, is unusual because although the star was massive, its explosion was quick and faint. Researchers believe this is due to a companion star that siphoned away its mass.These three panels reveal a supernova before, during and after it happened 920 million light-years from Earth(from left to right). The supernova, dubbed iPTF14gqr, is unusual because although the star was massive, its explosion was quick and faint. Researchers believe this is due to a companion star that siphoned away its mass. Photos: Wonders of the universeThese three panels reveal a supernova before, during and after it happened 920 million light-years from Earth(from left to right). The supernova, dubbed iPTF14gqr, is unusual because although the star was massive, its explosion was quick and faint. Researchers believe this is due to a companion star that siphoned away its mass.Hide Caption 15 of 80This is an artist's illustration of what a Neptune-size moon would look like orbiting the gas giant exoplanet Kepler-1625b in a star system 8,000 light-years from Earth. It could be the first exomoon ever discovered.This is an artist's illustration of what a Neptune-size moon would look like orbiting the gas giant exoplanet Kepler-1625b in a star system 8,000 light-years from Earth. It could be the first exomoon ever discovered. Photos: Wonders of the universeThis is an artist’s illustration of what a Neptune-size moon would look like orbiting the gas giant exoplanet Kepler-1625b in a star system 8,000 light-years from Earth. It could be the first exomoon ever discovered.Hide Caption 16 of 80An artist's illustration of Planet X, which could be shaping the orbits of smaller extremely distant outer solar system objects like 2015 TG387.An artist's illustration of Planet X, which could be shaping the orbits of smaller extremely distant outer solar system objects like 2015 TG387. Photos: Wonders of the universeAn artist’s illustration of Planet X, which could be shaping the orbits of smaller extremely distant outer solar system objects like 2015 TG387.Hide Caption 17 of 80This is an artist's concept of what SIMP J01365663+0933473 might look like. It has 12.7 times the mass of Jupiter but a magnetic field 200 times more powerful than Jupiter's. This object is 20 light-years from Earth. It's on the boundary line between being a planet or being a brown dwarf.This is an artist's concept of what SIMP J01365663+0933473 might look like. It has 12.7 times the mass of Jupiter but a magnetic field 200 times more powerful than Jupiter's. This object is 20 light-years from Earth. It's on the boundary line between being a planet or being a brown dwarf. Photos: Wonders of the universeThis is an artist’s concept of what SIMP J01365663+0933473 might look like. It has 12.7 times the mass of Jupiter but a magnetic field 200 times more powerful than Jupiter’s. This object is 20 light-years from Earth. It’s on the boundary line between being a planet or being a brown dwarf.Hide Caption 18 of 80The Andromeda galaxy cannibalized and shredded the once-large galaxy M32p, leaving behind this compact galaxy remnant known as M32. It is completely unique and contains a wealth of young stars.The Andromeda galaxy cannibalized and shredded the once-large galaxy M32p, leaving behind this compact galaxy remnant known as M32. It is completely unique and contains a wealth of young stars. Photos: Wonders of the universeThe Andromeda galaxy cannibalized and shredded the once-large galaxy M32p, leaving behind this compact galaxy remnant known as M32. It is completely unique and contains a wealth of young stars.Hide Caption 19 of 80Twelve new moons have been found around Jupiter. This graphic shows various groupings of the moons and their orbits, with the newly discovered ones shown in bold.Twelve new moons have been found around Jupiter. This graphic shows various groupings of the moons and their orbits, with the newly discovered ones shown in bold. Photos: Wonders of the universeTwelve new moons have been found around Jupiter. This graphic shows various groupings of the moons and their orbits, with the newly discovered ones shown in bold.Hide Caption 20 of 80Scientists and observatories around the world were able to trace a high-energy neutrino to a galaxy with a supermassive, rapidly spinning black hole at its center, known as a blazar. The galaxy sits to the left of Orion's shoulder in his constellation and is about 4 billion light-years from Earth. Scientists and observatories around the world were able to trace a high-energy neutrino to a galaxy with a supermassive, rapidly spinning black hole at its center, known as a blazar. The galaxy sits to the left of Orion's shoulder in his constellation and is about 4 billion light-years from Earth. Photos: Wonders of the universeScientists and observatories around the world were able to trace a high-energy neutrino to a galaxy with a supermassive, rapidly spinning black hole at its center, known as a blazar. The galaxy sits to the left of Orion’s shoulder in his constellation and is about 4 billion light-years from Earth. Hide Caption 21 of 80'Oumuamua, the first observed interstellar visitor to our solar system, is shown in an artist's illustration.'Oumuamua, the first observed interstellar visitor to our solar system, is shown in an artist's illustration. Photos: Wonders of the universe’Oumuamua, the first observed interstellar visitor to our solar system, is shown in an artist’s illustration.Hide Caption 22 of 80Planets don't just appear out of thin air -- but they do require gas, dust and other processes not fully understood by astronomers. This is an artist's impression of what "infant" planets look like forming around a young star.Planets don't just appear out of thin air -- but they do require gas, dust and other processes not fully understood by astronomers. This is an artist's impression of what "infant" planets look like forming around a young star. Photos: Wonders of the universePlanets don’t just appear out of thin air — but they do require gas, dust and other processes not fully understood by astronomers. This is an artist’s impression of what “infant” planets look like forming around a young star.Hide Caption 23 of 80These negative images of 2015 BZ509, which is circled in yellow, show the first known interstellar object that has become a permanent part of our solar system. The exo-asteroid was likely pulled into our solar system from another star system 4.5 billion years ago. It then settled into a retrograde orbit around Jupiter.These negative images of 2015 BZ509, which is circled in yellow, show the first known interstellar object that has become a permanent part of our solar system. The exo-asteroid was likely pulled into our solar system from another star system 4.5 billion years ago. It then settled into a retrograde orbit around Jupiter. Photos: Wonders of the universeThese negative images of 2015 BZ509, which is circled in yellow, show the first known interstellar object that has become a permanent part of our solar system. The exo-asteroid was likely pulled into our solar system from another star system 4.5 billion years ago. It then settled into a retrograde orbit around Jupiter.Hide Caption 24 of 80A close look at the diamond matrix in a meteorite that landed in Sudan in 2008. This is considered to be the first evidence of a proto-planet that helped form the terrestrial planets in our solar system. A close look at the diamond matrix in a meteorite that landed in Sudan in 2008. This is considered to be the first evidence of a proto-planet that helped form the terrestrial planets in our solar system. Photos: Wonders of the universeA close look at the diamond matrix in a meteorite that landed in Sudan in 2008. This is considered to be the first evidence of a proto-planet that helped form the terrestrial planets in our solar system. Hide Caption 25 of 802004 EW95 is the first carbon-rich asteroid confirmed to exist in the Kuiper Belt and a relic of the primordial solar system. This curious object probably formed in the asteroid belt between Mars and Jupiter before being flung billions of miles to its current home in the Kuiper Belt.2004 EW95 is the first carbon-rich asteroid confirmed to exist in the Kuiper Belt and a relic of the primordial solar system. This curious object probably formed in the asteroid belt between Mars and Jupiter before being flung billions of miles to its current home in the Kuiper Belt. Photos: Wonders of the universe2004 EW95 is the first carbon-rich asteroid confirmed to exist in the Kuiper Belt and a relic of the primordial solar system. This curious object probably formed in the asteroid belt between Mars and Jupiter before being flung billions of miles to its current home in the Kuiper Belt.Hide Caption 26 of 80The NASA/ESA Hubble Space Telescope is celebrating its 28th anniversary in space with this stunning and colorful image of the Lagoon Nebula 4,000 light-years from Earth. While the whole nebula is 55 light-years across, this image only reveals a portion of about four light-years. The NASA/ESA Hubble Space Telescope is celebrating its 28th anniversary in space with this stunning and colorful image of the Lagoon Nebula 4,000 light-years from Earth. While the whole nebula is 55 light-years across, this image only reveals a portion of about four light-years. Photos: Wonders of the universeThe NASA/ESA Hubble Space Telescope is celebrating its 28th anniversary in space with this stunning and colorful image of the Lagoon Nebula 4,000 light-years from Earth. While the whole nebula is 55 light-years across, this image only reveals a portion of about four light-years. Hide Caption 27 of 80This is a more star-filled view of the Lagoon Nebula, using Hubble's infrared capabilities. The reason you can see more stars is because infrared is able to cut through the dust and gas clouds to reveal the abundance of both young stars within the nebula, as well as more distant stars in the background. This is a more star-filled view of the Lagoon Nebula, using Hubble's infrared capabilities. The reason you can see more stars is because infrared is able to cut through the dust and gas clouds to reveal the abundance of both young stars within the nebula, as well as more distant stars in the background. Photos: Wonders of the universeThis is a more star-filled view of the Lagoon Nebula, using Hubble’s infrared capabilities. The reason you can see more stars is because infrared is able to cut through the dust and gas clouds to reveal the abundance of both young stars within the nebula, as well as more distant stars in the background. Hide Caption 28 of 80The Rosette Nebula is 5,000 light-years from Earth. The distinctive nebula, which some claim looks more like a skull, has a hole in the middle that creates the illusion of its rose-like shape. The Rosette Nebula is 5,000 light-years from Earth. The distinctive nebula, which some claim looks more like a skull, has a hole in the middle that creates the illusion of its rose-like shape. Photos: Wonders of the universeThe Rosette Nebula is 5,000 light-years from Earth. The distinctive nebula, which some claim looks more like a skull, has a hole in the middle that creates the illusion of its rose-like shape. Hide Caption 29 of 80KIC 8462852, also known as Boyajian's Star or Tabby's Star, is 1,000 light-years from us. It's 50% bigger than our sun and 1,000 degrees hotter. And it doesn't behave like any other star, dimming and brightening sporadically. Dust around the star, depicted here in an artist's illustration, may be the most likely cause of its strange behavior.KIC 8462852, also known as Boyajian's Star or Tabby's Star, is 1,000 light-years from us. It's 50% bigger than our sun and 1,000 degrees hotter. And it doesn't behave like any other star, dimming and brightening sporadically. Dust around the star, depicted here in an artist's illustration, may be the most likely cause of its strange behavior. Photos: Wonders of the universeKIC 8462852, also known as Boyajian’s Star or Tabby’s Star, is 1,000 light-years from us. It’s 50% bigger than our sun and 1,000 degrees hotter. And it doesn’t behave like any other star, dimming and brightening sporadically. Dust around the star, depicted here in an artist’s illustration, may be the most likely cause of its strange behavior.Hide Caption 30 of 80This inner slope of a Martian crater has several of the seasonal dark streaks called "recurrent slope lineae," or RSL, that a November 2017 report interprets as granular flows, rather than darkening due to flowing water. The image is from the HiRISE camera on NASA's Mars Reconnaissance Orbiter.This inner slope of a Martian crater has several of the seasonal dark streaks called "recurrent slope lineae," or RSL, that a November 2017 report interprets as granular flows, rather than darkening due to flowing water. The image is from the HiRISE camera on NASA's Mars Reconnaissance Orbiter. Photos: Wonders of the universeThis inner slope of a Martian crater has several of the seasonal dark streaks called “recurrent slope lineae,” or RSL, that a November 2017 report interprets as granular flows, rather than darkening due to flowing water. The image is from the HiRISE camera on NASA’s Mars Reconnaissance Orbiter.Hide Caption 31 of 80This artist's impression shows a supernova explosion, which contains the luminosity of 100 million suns. Supernova iPTF14hls, which has exploded multiple times, may be the most massive and longest-lasting ever observed. This artist's impression shows a supernova explosion, which contains the luminosity of 100 million suns. Supernova iPTF14hls, which has exploded multiple times, may be the most massive and longest-lasting ever observed. Photos: Wonders of the universeThis artist’s impression shows a supernova explosion, which contains the luminosity of 100 million suns. Supernova iPTF14hls, which has exploded multiple times, may be the most massive and longest-lasting ever observed. Hide Caption 32 of 80This illustration shows hydrocarbon compounds splitting into carbon and hydrogen inside ice giants, such as Neptune, turning into a "diamond (rain) shower."This illustration shows hydrocarbon compounds splitting into carbon and hydrogen inside ice giants, such as Neptune, turning into a "diamond (rain) shower." Photos: Wonders of the universeThis illustration shows hydrocarbon compounds splitting into carbon and hydrogen inside ice giants, such as Neptune, turning into a “diamond (rain) shower.”Hide Caption 33 of 80This striking image is the stellar nursery in the Orion Nebula, where stars are born. The red filament is a stretch of ammonia molecules measuring 50 light-years long. The blue represents the gas of the Orion Nebula. This image is a composite of observation from the Robert C. Byrd Green Bank Telescope and NASA's Wide-field Infrared Survey Explore telescope. "We still don't understand in detail how large clouds of gas in our Galaxy collapse to form new stars," said Rachel Friesen, one of the collaboration's co-Principal Investigators. "But ammonia is an excellent tracer of dense, star-forming gas." This striking image is the stellar nursery in the Orion Nebula, where stars are born. The red filament is a stretch of ammonia molecules measuring 50 light-years long. The blue represents the gas of the Orion Nebula. This image is a composite of observation from the Robert C. Byrd Green Bank Telescope and NASA's Wide-field Infrared Survey Explore telescope. "We still don't understand in detail how large clouds of gas in our Galaxy collapse to form new stars," said Rachel Friesen, one of the collaboration's co-Principal Investigators. "But ammonia is an excellent tracer of dense, star-forming gas." Photos: Wonders of the universeThis striking image is the stellar nursery in the Orion Nebula, where stars are born. The red filament is a stretch of ammonia molecules measuring 50 light-years long. The blue represents the gas of the Orion Nebula. This image is a composite of observation from the Robert C. Byrd Green Bank Telescope and NASA’s Wide-field Infrared Survey Explore telescope. “We still don’t understand in detail how large clouds of gas in our Galaxy collapse to form new stars,” said Rachel Friesen, one of the collaboration’s co-Principal Investigators. “But ammonia is an excellent tracer of dense, star-forming gas.” Hide Caption 34 of 80This is an illustration of the Parker Solar Probe spacecraft approaching the sun. The NASA probe <a href="http://www.cnn.com/2017/05/31/us/nasa-sun-mission/" target="_blank">will explore the sun's atmosphere</a> in a mission that begins in the summer of 2018.This is an illustration of the Parker Solar Probe spacecraft approaching the sun. The NASA probe <a href="http://www.cnn.com/2017/05/31/us/nasa-sun-mission/" target="_blank">will explore the sun's atmosphere</a> in a mission that begins in the summer of 2018. Photos: Wonders of the universeThis is an illustration of the Parker Solar Probe spacecraft approaching the sun. The NASA probe will explore the sun’s atmosphere in a mission that begins in the summer of 2018.Hide Caption 35 of 80See that tiny dot between Saturn's rings? That's Earth, as seen by the Cassini mission on April 12, 2017. "Cassini was 870 million miles away from Earth when the image was taken," according to NASA. "Although far too small to be visible in the image, the part of Earth facing Cassini at the time was the southern Atlantic Ocean." Much like the famous <a href="https://www.nasa.gov/jpl/voyager/pale-blue-dot-images-turn-25" target="_blank">"pale blue dot"</a> image captured by Voyager 1 in 1990, we are but a point of light when viewed from the furthest planet in the solar system.See that tiny dot between Saturn's rings? That's Earth, as seen by the Cassini mission on April 12, 2017. "Cassini was 870 million miles away from Earth when the image was taken," according to NASA. "Although far too small to be visible in the image, the part of Earth facing Cassini at the time was the southern Atlantic Ocean." Much like the famous <a href="https://www.nasa.gov/jpl/voyager/pale-blue-dot-images-turn-25" target="_blank">"pale blue dot"</a> image captured by Voyager 1 in 1990, we are but a point of light when viewed from the furthest planet in the solar system. Photos: Wonders of the universeSee that tiny dot between Saturn’s rings? That’s Earth, as seen by the Cassini mission on April 12, 2017. “Cassini was 870 million miles away from Earth when the image was taken,” according to NASA. “Although far too small to be visible in the image, the part of Earth facing Cassini at the time was the southern Atlantic Ocean.” Much like the famous “pale blue dot” image captured by Voyager 1 in 1990, we are but a point of light when viewed from the furthest planet in the solar system.Hide Caption 36 of 80NASA's Hubble Space Telescope, using infrared technology, reveals the <a href="http://www.cnn.com/2016/04/01/us/milky-way-hubble-feat/index.html">density of stars in the Milky Way.</a> According to NASA, the photo -- stitched together from nine images -- contains more than a half-million stars. The star cluster is the densest in the galaxy. NASA's Hubble Space Telescope, using infrared technology, reveals the <a href="http://www.cnn.com/2016/04/01/us/milky-way-hubble-feat/index.html">density of stars in the Milky Way.</a> According to NASA, the photo -- stitched together from nine images -- contains more than a half-million stars. The star cluster is the densest in the galaxy. Photos: Wonders of the universeNASA’s Hubble Space Telescope, using infrared technology, reveals the density of stars in the Milky Way. According to NASA, the photo — stitched together from nine images — contains more than a half-million stars. The star cluster is the densest in the galaxy. Hide Caption 37 of 80This photo of Saturn's large icy moon, Tethys, was taken by NASA's Cassini spacecraft, which sent back some<a href="http://www.cnn.com/2014/06/27/tech/gallery/cassinis-top-discoveries/" target="_blank"> jaw-dropping images</a> from the ringed planet. This photo of Saturn's large icy moon, Tethys, was taken by NASA's Cassini spacecraft, which sent back some<a href="http://www.cnn.com/2014/06/27/tech/gallery/cassinis-top-discoveries/" target="_blank"> jaw-dropping images</a> from the ringed planet. Photos: Wonders of the universeThis photo of Saturn’s large icy moon, Tethys, was taken by NASA’s Cassini spacecraft, which sent back some jaw-dropping images from the ringed planet. Hide Caption 38 of 80This is what Earth and its moon look like from Mars. The image is a composite of the best Earth image and the best moon image taken on November 20, 2016, by NASA's Mars Reconnaissance Orbiter. The orbiter's camera takes images in three wavelength bands: infrared, red and blue-green. Mars was about 127 million miles from Earth when the images were taken.This is what Earth and its moon look like from Mars. The image is a composite of the best Earth image and the best moon image taken on November 20, 2016, by NASA's Mars Reconnaissance Orbiter. The orbiter's camera takes images in three wavelength bands: infrared, red and blue-green. Mars was about 127 million miles from Earth when the images were taken. Photos: Wonders of the universeThis is what Earth and its moon look like from Mars. The image is a composite of the best Earth image and the best moon image taken on November 20, 2016, by NASA’s Mars Reconnaissance Orbiter. The orbiter’s camera takes images in three wavelength bands: infrared, red and blue-green. Mars was about 127 million miles from Earth when the images were taken.Hide Caption 39 of 80PGC 1000714 was initially thought to be a common elliptical galaxy, but a closer analysis revealed the incredibly rare discovery of a Hoag-type galaxy. It has a round core encircled by two detached rings.PGC 1000714 was initially thought to be a common elliptical galaxy, but a closer analysis revealed the incredibly rare discovery of a Hoag-type galaxy. It has a round core encircled by two detached rings. Photos: Wonders of the universePGC 1000714 was initially thought to be a common elliptical galaxy, but a closer analysis revealed the incredibly rare discovery of a Hoag-type galaxy. It has a round core encircled by two detached rings.Hide Caption 40 of 80NASA's Cassini spacecraft took these images of the planet's mysterious hexagon-shaped jetstream in December 2016. The hexagon was discovered in images taken by the Voyager spacecraft in the early 1980s. It's estimated to have a diameter wider than two Earths.NASA's Cassini spacecraft took these images of the planet's mysterious hexagon-shaped jetstream in December 2016. The hexagon was discovered in images taken by the Voyager spacecraft in the early 1980s. It's estimated to have a diameter wider than two Earths. Photos: Wonders of the universeNASA’s Cassini spacecraft took these images of the planet’s mysterious hexagon-shaped jetstream in December 2016. The hexagon was discovered in images taken by the Voyager spacecraft in the early 1980s. It’s estimated to have a diameter wider than two Earths.Hide Caption 41 of 80A dead star gives off a greenish glow in this Hubble Space Telescope image of the Crab Nebula, located about 6,500 light years from Earth in the constellation Taurus. NASA released the image for Halloween 2016 and played up the theme in its press release. The agency said the "ghoulish-looking object still has a pulse." At the center of the Crab Nebula is the crushed core, or "heart" of an exploded star. The heart is spinning 30 times per second and producing a magnetic field that generates 1 trillion volts, NASA said.A dead star gives off a greenish glow in this Hubble Space Telescope image of the Crab Nebula, located about 6,500 light years from Earth in the constellation Taurus. NASA released the image for Halloween 2016 and played up the theme in its press release. The agency said the "ghoulish-looking object still has a pulse." At the center of the Crab Nebula is the crushed core, or "heart" of an exploded star. The heart is spinning 30 times per second and producing a magnetic field that generates 1 trillion volts, NASA said. Photos: Wonders of the universeA dead star gives off a greenish glow in this Hubble Space Telescope image of the Crab Nebula, located about 6,500 light years from Earth in the constellation Taurus. NASA released the image for Halloween 2016 and played up the theme in its press release. The agency said the “ghoulish-looking object still has a pulse.” At the center of the Crab Nebula is the crushed core, or “heart” of an exploded star. The heart is spinning 30 times per second and producing a magnetic field that generates 1 trillion volts, NASA said.Hide Caption 42 of 80Peering through the thick dust clouds of the galactic bulge, an international team of astronomers revealed the unusual mix of stars in the stellar cluster known as Terzan 5. The new results indicate that Terzan 5 is one of the bulge's primordial building blocks, most likely the relic of the very early days of the Milky Way. Peering through the thick dust clouds of the galactic bulge, an international team of astronomers revealed the unusual mix of stars in the stellar cluster known as Terzan 5. The new results indicate that Terzan 5 is one of the bulge's primordial building blocks, most likely the relic of the very early days of the Milky Way. Photos: Wonders of the universePeering through the thick dust clouds of the galactic bulge, an international team of astronomers revealed the unusual mix of stars in the stellar cluster known as Terzan 5. The new results indicate that Terzan 5 is one of the bulge’s primordial building blocks, most likely the relic of the very early days of the Milky Way. Hide Caption 43 of 80An artist's conception of Planet Nine, which would be the farthest planet within our solar system. The similar cluster orbits of extreme objects on the edge of our solar system suggest a massive planet is located there.An artist's conception of Planet Nine, which would be the farthest planet within our solar system. The similar cluster orbits of extreme objects on the edge of our solar system suggest a massive planet is located there. Photos: Wonders of the universeAn artist’s conception of Planet Nine, which would be the farthest planet within our solar system. The similar cluster orbits of extreme objects on the edge of our solar system suggest a massive planet is located there.Hide Caption 44 of 80An illustration of the orbits of the new and previously known extremely distant Solar System objects. The clustering of most of their orbits indicates that they are likely be influenced by something massive and very distant, the proposed Planet X.An illustration of the orbits of the new and previously known extremely distant Solar System objects. The clustering of most of their orbits indicates that they are likely be influenced by something massive and very distant, the proposed Planet X. Photos: Wonders of the universeAn illustration of the orbits of the new and previously known extremely distant Solar System objects. The clustering of most of their orbits indicates that they are likely be influenced by something massive and very distant, the proposed Planet X.Hide Caption 45 of 80Say hello to dark galaxy Dragonfly 44. Like our Milky Way, it has a halo of spherical clusters of stars around its core. Say hello to dark galaxy Dragonfly 44. Like our Milky Way, it has a halo of spherical clusters of stars around its core. Photos: Wonders of the universeSay hello to dark galaxy Dragonfly 44. Like our Milky Way, it has a halo of spherical clusters of stars around its core. Hide Caption 46 of 80A classical nova occurs when a white dwarf star gains matter from its secondary star (a red dwarf) over a period of time, causing a thermonuclear reaction on the surface that eventually erupts in a single visible outburst. This creates a 10,000-fold increase in brightness, depicted here in an artist's rendering.A classical nova occurs when a white dwarf star gains matter from its secondary star (a red dwarf) over a period of time, causing a thermonuclear reaction on the surface that eventually erupts in a single visible outburst. This creates a 10,000-fold increase in brightness, depicted here in an artist's rendering. Photos: Wonders of the universeA classical nova occurs when a white dwarf star gains matter from its secondary star (a red dwarf) over a period of time, causing a thermonuclear reaction on the surface that eventually erupts in a single visible outburst. This creates a 10,000-fold increase in brightness, depicted here in an artist’s rendering.Hide Caption 47 of 80Gravitational lensing and space warping are visible in this image of near and distant galaxies captured by Hubble. Gravitational lensing and space warping are visible in this image of near and distant galaxies captured by Hubble. Photos: Wonders of the universeGravitational lensing and space warping are visible in this image of near and distant galaxies captured by Hubble. Hide Caption 48 of 80At the center of our galaxy, the Milky Way, researchers discovered an X-shaped structure within a tightly packed group of stars. At the center of our galaxy, the Milky Way, researchers discovered an X-shaped structure within a tightly packed group of stars. Photos: Wonders of the universeAt the center of our galaxy, the Milky Way, researchers discovered an X-shaped structure within a tightly packed group of stars. Hide Caption 49 of 80Meet UGC 1382: What astronomers thought was a normal elliptical galaxy (left) was actually revealed to be a massive disc galaxy made up of different parts when viewed with ultraviolet and deep optical data (center and right). In a complete reversal of normal galaxy structure, the center is younger than its outer spiral disk. Meet UGC 1382: What astronomers thought was a normal elliptical galaxy (left) was actually revealed to be a massive disc galaxy made up of different parts when viewed with ultraviolet and deep optical data (center and right). In a complete reversal of normal galaxy structure, the center is younger than its outer spiral disk. Photos: Wonders of the universeMeet UGC 1382: What astronomers thought was a normal elliptical galaxy (left) was actually revealed to be a massive disc galaxy made up of different parts when viewed with ultraviolet and deep optical data (center and right). In a complete reversal of normal galaxy structure, the center is younger than its outer spiral disk. Hide Caption 50 of 80NASA's Hubble Space Telescope captured this image of the Crab Nebula and its "beating heart," which is a neutron star at the right of the two bright stars in the center of this image. The neutron star pulses 30 times a second. The rainbow colors are visible due to the movement of materials in the nebula occurring during the time-lapse of the image. NASA's Hubble Space Telescope captured this image of the Crab Nebula and its "beating heart," which is a neutron star at the right of the two bright stars in the center of this image. The neutron star pulses 30 times a second. The rainbow colors are visible due to the movement of materials in the nebula occurring during the time-lapse of the image. Photos: Wonders of the universeNASA’s Hubble Space Telescope captured this image of the Crab Nebula and its “beating heart,” which is a neutron star at the right of the two bright stars in the center of this image. The neutron star pulses 30 times a second. The rainbow colors are visible due to the movement of materials in the nebula occurring during the time-lapse of the image. Hide Caption 51 of 80The Hubble Space Telescope captured an image of a hidden galaxy that is fainter than Andromeda or the Milky Way. This low surface brightness galaxy, called UGC 477, is over 110 million light-years away in the constellation of Pisces.The Hubble Space Telescope captured an image of a hidden galaxy that is fainter than Andromeda or the Milky Way. This low surface brightness galaxy, called UGC 477, is over 110 million light-years away in the constellation of Pisces. Photos: Wonders of the universeThe Hubble Space Telescope captured an image of a hidden galaxy that is fainter than Andromeda or the Milky Way. This low surface brightness galaxy, called UGC 477, is over 110 million light-years away in the constellation of Pisces.Hide Caption 52 of 80On April 19, NASA released new images of bright craters on Ceres. This photo shows the Haulani Crater, which has evidence of landslides from its rim. Scientists believe some craters on the dwarf planet are bright because they are relatively new. On April 19, NASA released new images of bright craters on Ceres. This photo shows the Haulani Crater, which has evidence of landslides from its rim. Scientists believe some craters on the dwarf planet are bright because they are relatively new. Photos: Wonders of the universeOn April 19, NASA released new images of bright craters on Ceres. This photo shows the Haulani Crater, which has evidence of landslides from its rim. Scientists believe some craters on the dwarf planet are bright because they are relatively new. Hide Caption 53 of 80This illustration shows the millions of dust grains NASA's Cassini spacecraft has sampled near Saturn. A few dozen of them appear to have come from beyond our solar system.This illustration shows the millions of dust grains NASA's Cassini spacecraft has sampled near Saturn. A few dozen of them appear to have come from beyond our solar system. Photos: Wonders of the universeThis illustration shows the millions of dust grains NASA’s Cassini spacecraft has sampled near Saturn. A few dozen of them appear to have come from beyond our solar system.Hide Caption 54 of 80This image from the VLT Survey Telescope at ESO's Paranal Observatory in Chile shows a stunning concentration of galaxies known as the Fornax Cluster, which can be found in the Southern Hemisphere. At the center of this cluster, in the middle of the three bright blobs on the left side of the image, lies a cD galaxy -- a galactic cannibal that has grown in size by consuming smaller galaxies.This image from the VLT Survey Telescope at ESO's Paranal Observatory in Chile shows a stunning concentration of galaxies known as the Fornax Cluster, which can be found in the Southern Hemisphere. At the center of this cluster, in the middle of the three bright blobs on the left side of the image, lies a cD galaxy -- a galactic cannibal that has grown in size by consuming smaller galaxies. Photos: Wonders of the universeThis image from the VLT Survey Telescope at ESO’s Paranal Observatory in Chile shows a stunning concentration of galaxies known as the Fornax Cluster, which can be found in the Southern Hemisphere. At the center of this cluster, in the middle of the three bright blobs on the left side of the image, lies a cD galaxy — a galactic cannibal that has grown in size by consuming smaller galaxies.Hide Caption 55 of 80This image shows the central region of the Tarantula Nebula in the Large Magellanic Cloud. The young and dense star cluster R136, which contains hundreds of massive stars, is visible in the lower right of the image taken by the Hubble Space Telescope.This image shows the central region of the Tarantula Nebula in the Large Magellanic Cloud. The young and dense star cluster R136, which contains hundreds of massive stars, is visible in the lower right of the image taken by the Hubble Space Telescope. Photos: Wonders of the universeThis image shows the central region of the Tarantula Nebula in the Large Magellanic Cloud. The young and dense star cluster R136, which contains hundreds of massive stars, is visible in the lower right of the image taken by the Hubble Space Telescope.Hide Caption 56 of 80In March 2016, astronomers published a paper on powerful red flashes coming from binary system V404 Cygni in 2015.  This illustration shows a black hole, similar to the one in V404 Cygni, devouring material from an orbiting star. In March 2016, astronomers published a paper on powerful red flashes coming from binary system V404 Cygni in 2015.  This illustration shows a black hole, similar to the one in V404 Cygni, devouring material from an orbiting star. Photos: Wonders of the universeIn March 2016, astronomers published a paper on powerful red flashes coming from binary system V404 Cygni in 2015. This illustration shows a black hole, similar to the one in V404 Cygni, devouring material from an orbiting star. Hide Caption 57 of 80A <a href="http://www.eso.org/public/news/eso1606/" target="_blank">new map of the Milky Way</a> was released February 24, 2016, giving astronomers a full census of the star-forming regions within our own galaxy. The APEX telescope in Chile captured this survey.A <a href="http://www.eso.org/public/news/eso1606/" target="_blank">new map of the Milky Way</a> was released February 24, 2016, giving astronomers a full census of the star-forming regions within our own galaxy. The APEX telescope in Chile captured this survey. Photos: Wonders of the universeA new map of the Milky Way was released February 24, 2016, giving astronomers a full census of the star-forming regions within our own galaxy. The APEX telescope in Chile captured this survey.Hide Caption 58 of 80This image shows the elliptical galaxy NGC 4889, deeply embedded within the Coma galaxy cluster. There is a gigantic supermassive black hole at the center of the galaxy.This image shows the elliptical galaxy NGC 4889, deeply embedded within the Coma galaxy cluster. There is a gigantic supermassive black hole at the center of the galaxy. Photos: Wonders of the universeThis image shows the elliptical galaxy NGC 4889, deeply embedded within the Coma galaxy cluster. There is a gigantic supermassive black hole at the center of the galaxy.Hide Caption 59 of 80An artist's impression of 2MASS J2126, which takens 900,000 years to orbit its star, 1 trillion kilometers away. An artist's impression of 2MASS J2126, which takens 900,000 years to orbit its star, 1 trillion kilometers away. Photos: Wonders of the universeAn artist’s impression of 2MASS J2126, which takens 900,000 years to orbit its star, 1 trillion kilometers away. Hide Caption 60 of 80Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune. Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune. Photos: Wonders of the universeCaltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune. Hide Caption 61 of 80<a href="http://www.cnn.com/2016/01/14/us/possible-powerful-supernova/index.html" target="_blank">An international team of astronomers</a> may have discovered the biggest and brightest supernova ever. The explosion was 570 billion times brighter than the sun and 20 times brighter than all the stars in the Milky Way galaxy combined, according to a statement from The Ohio State University, which is leading the study. Scientists are straining to define the supernova's strength. This image shows an artist's impression of the supernova as it would appear from an exoplanet located about 10,000 light years away.<a href="http://www.cnn.com/2016/01/14/us/possible-powerful-supernova/index.html" target="_blank">An international team of astronomers</a> may have discovered the biggest and brightest supernova ever. The explosion was 570 billion times brighter than the sun and 20 times brighter than all the stars in the Milky Way galaxy combined, according to a statement from The Ohio State University, which is leading the study. Scientists are straining to define the supernova's strength. This image shows an artist's impression of the supernova as it would appear from an exoplanet located about 10,000 light years away. Photos: Wonders of the universeAn international team of astronomers may have discovered the biggest and brightest supernova ever. The explosion was 570 billion times brighter than the sun and 20 times brighter than all the stars in the Milky Way galaxy combined, according to a statement from The Ohio State University, which is leading the study. Scientists are straining to define the supernova’s strength. This image shows an artist’s impression of the supernova as it would appear from an exoplanet located about 10,000 light years away.Hide Caption 62 of 80Astronomers noticed huge waves of <a href="http://www.cnn.com/2016/01/06/world/black-hole-burps/index.html">gas being "burped" </a>by the black hole at the center of NGC 5195, a small galaxy 26 million light years from Earth. The team believes the outburst is a consequence of the interaction of NGC 5195 with a nearby galaxy. Astronomers noticed huge waves of <a href="http://www.cnn.com/2016/01/06/world/black-hole-burps/index.html">gas being "burped" </a>by the black hole at the center of NGC 5195, a small galaxy 26 million light years from Earth. The team believes the outburst is a consequence of the interaction of NGC 5195 with a nearby galaxy. Photos: Wonders of the universeAstronomers noticed huge waves of gas being “burped” by the black hole at the center of NGC 5195, a small galaxy 26 million light years from Earth. The team believes the outburst is a consequence of the interaction of NGC 5195 with a nearby galaxy. Hide Caption 63 of 80An artist's illustration shows a binary black hole found in the quasar at the center of the Markarian 231 galaxy. Astronomers using NASA's Hubble Space Telescope  <a href="http://www.cnn.com/2015/08/31/us/double-black-hole-nasa-hubble-feat/" target="_blank">discovered the galaxy being powered by two black holes</a> "furiously whirling about each other," the space agency said in a news release.An artist's illustration shows a binary black hole found in the quasar at the center of the Markarian 231 galaxy. Astronomers using NASA's Hubble Space Telescope  <a href="http://www.cnn.com/2015/08/31/us/double-black-hole-nasa-hubble-feat/" target="_blank">discovered the galaxy being powered by two black holes</a> "furiously whirling about each other," the space agency said in a news release. Photos: Wonders of the universeAn artist’s illustration shows a binary black hole found in the quasar at the center of the Markarian 231 galaxy. Astronomers using NASA’s Hubble Space Telescope discovered the galaxy being powered by two black holes “furiously whirling about each other,” the space agency said in a news release.Hide Caption 64 of 80An artist's impression of what a black hole might look like. In February, researchers in China said they had spotted a super-massive black hole 12 billion times the size of the sun.An artist's impression of what a black hole might look like. In February, researchers in China said they had spotted a super-massive black hole 12 billion times the size of the sun. Photos: Wonders of the universeAn artist’s impression of what a black hole might look like. In February, researchers in China said they had spotted a super-massive black hole 12 billion times the size of the sun.Hide Caption 65 of 80Are there are oceans on any of Jupiter's moons? The Juice probe shown in this artist's impression aims to find out. Picture courtesy of ESA/AOESAre there are oceans on any of Jupiter's moons? The Juice probe shown in this artist's impression aims to find out. Picture courtesy of ESA/AOES Photos: Wonders of the universeAre there are oceans on any of Jupiter’s moons? The Juice probe shown in this artist’s impression aims to find out. Picture courtesy of ESA/AOESHide Caption 66 of 80Astronomers have discovered powerful auroras on a brown dwarf that is 20 light-years away. This is an artist's concept of the phenomenon. Astronomers have discovered powerful auroras on a brown dwarf that is 20 light-years away. This is an artist's concept of the phenomenon. Photos: Wonders of the universeAstronomers have discovered powerful auroras on a brown dwarf that is 20 light-years away. This is an artist’s concept of the phenomenon. Hide Caption 67 of 80Venus, bottom, and Jupiter shine brightly above Matthews, North Carolina, on Monday, June 29. The apparent close encounter, called a conjunction, has been giving a dazzling display in the summer sky. Although the two planets appear to be close together, in reality they are millions of miles apart.Venus, bottom, and Jupiter shine brightly above Matthews, North Carolina, on Monday, June 29. The apparent close encounter, called a conjunction, has been giving a dazzling display in the summer sky. Although the two planets appear to be close together, in reality they are millions of miles apart. Photos: Wonders of the universeVenus, bottom, and Jupiter shine brightly above Matthews, North Carolina, on Monday, June 29. The apparent close encounter, called a conjunction, has been giving a dazzling display in the summer sky. Although the two planets appear to be close together, in reality they are millions of miles apart.Hide Caption 68 of 80Jupiter's icy moon Europa may be the best place in the solar system to look for extraterrestrial life, according to NASA. The moon is about the size of Earth's moon, and there is evidence it has an ocean beneath its frozen crust that may hold twice as much water as Earth. NASA's 2016 budget includes a request for $30 million to plan a mission to investigate Europa. The image above was taken by the Galileo spacecraft on November 25, 1999. It's a 12-frame mosaic and is considered the the best image yet of the side of Europa that faces Jupiter.Jupiter's icy moon Europa may be the best place in the solar system to look for extraterrestrial life, according to NASA. The moon is about the size of Earth's moon, and there is evidence it has an ocean beneath its frozen crust that may hold twice as much water as Earth. NASA's 2016 budget includes a request for $30 million to plan a mission to investigate Europa. The image above was taken by the Galileo spacecraft on November 25, 1999. It's a 12-frame mosaic and is considered the the best image yet of the side of Europa that faces Jupiter. Photos: Wonders of the universeJupiter’s icy moon Europa may be the best place in the solar system to look for extraterrestrial life, according to NASA. The moon is about the size of Earth’s moon, and there is evidence it has an ocean beneath its frozen crust that may hold twice as much water as Earth. NASA’s 2016 budget includes a request for $30 million to plan a mission to investigate Europa. The image above was taken by the Galileo spacecraft on November 25, 1999. It’s a 12-frame mosaic and is considered the the best image yet of the side of Europa that faces Jupiter.Hide Caption 69 of 80This nebula, or cloud of gas and dust, is called RCW 34 or Gum 19. The brightest areas you can see are where the gas is being heated by young stars. Eventually the gas burst outward like champagne after a bottle is uncorked. Scientists call this champagne flow. This new image of the nebula was captured by the European Space Organization's Very Large Telescope in Chile. RCW 34 is in the constellation Vela in the southern sky. The name means "sails of a ship" in Latin.This nebula, or cloud of gas and dust, is called RCW 34 or Gum 19. The brightest areas you can see are where the gas is being heated by young stars. Eventually the gas burst outward like champagne after a bottle is uncorked. Scientists call this champagne flow. This new image of the nebula was captured by the European Space Organization's Very Large Telescope in Chile. RCW 34 is in the constellation Vela in the southern sky. The name means "sails of a ship" in Latin. Photos: Wonders of the universeThis nebula, or cloud of gas and dust, is called RCW 34 or Gum 19. The brightest areas you can see are where the gas is being heated by young stars. Eventually the gas burst outward like champagne after a bottle is uncorked. Scientists call this champagne flow. This new image of the nebula was captured by the European Space Organization’s Very Large Telescope in Chile. RCW 34 is in the constellation Vela in the southern sky. The name means “sails of a ship” in Latin.Hide Caption 70 of 80The Hubble Space Telescope captured images of Jupiter's three great moons -- Io, Callisto, and Europa -- passing by at once.The Hubble Space Telescope captured images of Jupiter's three great moons -- Io, Callisto, and Europa -- passing by at once. Photos: Wonders of the universeThe Hubble Space Telescope captured images of Jupiter’s three great moons — Io, Callisto, and Europa — passing by at once.Hide Caption 71 of 80A massive galaxy cluster known as SDSS J1038+4849 <a href="http://www.cnn.com/2015/02/10/tech/space-smiley-face/index.html">looks like a smiley face</a> in an image captured by the Hubble Telescope. The two glowing eyes are actually two distant galaxies. And what of the smile and the round face? That's a result of what astronomers call "strong gravitational lensing." That happens because the gravitational pull between the two galaxy clusters is so strong it distorts time and space around them.A massive galaxy cluster known as SDSS J1038+4849 <a href="http://www.cnn.com/2015/02/10/tech/space-smiley-face/index.html">looks like a smiley face</a> in an image captured by the Hubble Telescope. The two glowing eyes are actually two distant galaxies. And what of the smile and the round face? That's a result of what astronomers call "strong gravitational lensing." That happens because the gravitational pull between the two galaxy clusters is so strong it distorts time and space around them. Photos: Wonders of the universeA massive galaxy cluster known as SDSS J1038+4849 looks like a smiley face in an image captured by the Hubble Telescope. The two glowing eyes are actually two distant galaxies. And what of the smile and the round face? That’s a result of what astronomers call “strong gravitational lensing.” That happens because the gravitational pull between the two galaxy clusters is so strong it distorts time and space around them.Hide Caption 72 of 80Using powerful optics, astronomers have found a planet-like body, J1407b, with rings 200 times the size of Saturn's. This is an artist's depiction of the rings of planet J1407b, which are eclipsing a star.Using powerful optics, astronomers have found a planet-like body, J1407b, with rings 200 times the size of Saturn's. This is an artist's depiction of the rings of planet J1407b, which are eclipsing a star. Photos: Wonders of the universeUsing powerful optics, astronomers have found a planet-like body, J1407b, with rings 200 times the size of Saturn’s. This is an artist’s depiction of the rings of planet J1407b, which are eclipsing a star.Hide Caption 73 of 80A patch of stars appears to be missing in this image from the La Silla Observatory in Chile. But the stars are actually still there behind a cloud of gas and dust called Lynds Dark Nebula 483. The cloud is about 700 light years from Earth in the constellation Serpens (The Serpent).A patch of stars appears to be missing in this image from the La Silla Observatory in Chile. But the stars are actually still there behind a cloud of gas and dust called Lynds Dark Nebula 483. The cloud is about 700 light years from Earth in the constellation Serpens (The Serpent). Photos: Wonders of the universeA patch of stars appears to be missing in this image from the La Silla Observatory in Chile. But the stars are actually still there behind a cloud of gas and dust called Lynds Dark Nebula 483. The cloud is about 700 light years from Earth in the constellation Serpens (The Serpent).Hide Caption 74 of 80This is the largest Hubble Space Telescope image ever assembled. It's a portion of the galaxy next door, Andromeda (M31).This is the largest Hubble Space Telescope image ever assembled. It's a portion of the galaxy next door, Andromeda (M31). Photos: Wonders of the universeThis is the largest Hubble Space Telescope image ever assembled. It’s a portion of the galaxy next door, Andromeda (M31).Hide Caption 75 of 80NASA has captured a stunning new image of the so-called "Pillars of Creation," one of the space agency's most iconic discoveries. The giant columns of cold gas, in a small region of the Eagle Nebula, were popularized by a similar image taken by the Hubble Space Telescope in 1995. NASA has captured a stunning new image of the so-called "Pillars of Creation," one of the space agency's most iconic discoveries. The giant columns of cold gas, in a small region of the Eagle Nebula, were popularized by a similar image taken by the Hubble Space Telescope in 1995. Photos: Wonders of the universeNASA has captured a stunning new image of the so-called “Pillars of Creation,” one of the space agency’s most iconic discoveries. The giant columns of cold gas, in a small region of the Eagle Nebula, were popularized by a similar image taken by the Hubble Space Telescope in 1995. Hide Caption 76 of 80Astronomers using the Hubble Space pieced together this picture that shows a small section of space in the southern-hemisphere constellation Fornax. Within this deep-space image are 10,000 galaxies, going back in time as far as a few hundred million years after the Big Bang.Astronomers using the Hubble Space pieced together this picture that shows a small section of space in the southern-hemisphere constellation Fornax. Within this deep-space image are 10,000 galaxies, going back in time as far as a few hundred million years after the Big Bang. Photos: Wonders of the universeAstronomers using the Hubble Space pieced together this picture that shows a small section of space in the southern-hemisphere constellation Fornax. Within this deep-space image are 10,000 galaxies, going back in time as far as a few hundred million years after the Big Bang.Hide Caption 77 of 80Planetary nebula Abell 33 appears ring-like in this image, taken using the European Southern Observatory's Very Large Telescope. The blue bubble was created when an aging star shed its outer layers and a star in the foreground happened to align with it to create a "diamond engagement ring" effect.Planetary nebula Abell 33 appears ring-like in this image, taken using the European Southern Observatory's Very Large Telescope. The blue bubble was created when an aging star shed its outer layers and a star in the foreground happened to align with it to create a "diamond engagement ring" effect. Photos: Wonders of the universePlanetary nebula Abell 33 appears ring-like in this image, taken using the European Southern Observatory’s Very Large Telescope. The blue bubble was created when an aging star shed its outer layers and a star in the foreground happened to align with it to create a “diamond engagement ring” effect.Hide Caption 78 of 80This long-exposure image from the Hubble Telescope is the <a href="http://hubblesite.org/newscenter/archive/releases/2014/01/full/" target="_blank">deepest-ever picture taken of a cluster of galaxies. The cluster, </a>called Abell 2744, contains several hundred galaxies as they looked 3.5 billion years ago; the more distant galaxies appear as they did more than 12 billion years ago, not long after the Big Bang. This long-exposure image from the Hubble Telescope is the <a href="http://hubblesite.org/newscenter/archive/releases/2014/01/full/" target="_blank">deepest-ever picture taken of a cluster of galaxies. The cluster, </a>called Abell 2744, contains several hundred galaxies as they looked 3.5 billion years ago; the more distant galaxies appear as they did more than 12 billion years ago, not long after the Big Bang. Photos: Wonders of the universeThis long-exposure image from the Hubble Telescope is the deepest-ever picture taken of a cluster of galaxies. The cluster, called Abell 2744, contains several hundred galaxies as they looked 3.5 billion years ago; the more distant galaxies appear as they did more than 12 billion years ago, not long after the Big Bang. Hide Caption 79 of 80This Hubble image looks a floating marble or a maybe a giant, disembodied eye. But it's actually a nebula with a giant star at its center. Scientists think the star used to be 20 times more massive than our sun, but it's dying and is destined to go supernova.This Hubble image looks a floating marble or a maybe a giant, disembodied eye. But it's actually a nebula with a giant star at its center. Scientists think the star used to be 20 times more massive than our sun, but it's dying and is destined to go supernova. Photos: Wonders of the universeThis Hubble image looks a floating marble or a maybe a giant, disembodied eye. But it’s actually a nebula with a giant star at its center. Scientists think the star used to be 20 times more massive than our sun, but it’s dying and is destined to go supernova.Hide Caption 80 of 8003 wonders of the universe COWwonders of the universe High Green Bank01 wonders of the universecomet 46p wirtanenwater asteroid bennuwonders of the universe_young starsApep 8 microns wonders of the universe01 wonders of the universe04 wonders of the universe03 wonders of the universe05 wonders of the universe03 wonders of the universe 110102 wonders of the universe 110101 wonders of the universe 1101wonders of the universe supernova iPTF 14gqr01 wonders of the universe 10031801 Planet X01 wonders of the universe 080702 wonders of the universe01 wonders of the universe03 wonders of the world 0712interstellar asteroid PHOTO ILLUSTRATIONWonders of the universe GALLERY01 first interstellar immigrant wonders of the universe diamond matrix meteoriteasteroid 2004 EW95 wonders of the universe01 Hubble 28th anniversary02 Hubble 28th anniversaryRosette Nebulatabbys starmartian crater streaks01 zombie star supernova diamond rain planets01 orion nebulaParker Solar Probe spacecraft sun illustration Earth Between Rings of Saturnhubble milky way mar 2016NASA Saturn moon deathstarearth from mars reconnaissance orbiterPGC 1000714 New GalaxyCassini Saturn hexagon collageHubble star ghostly glow01 fossilised star cluster01 extreme objects solar system planet nine02 extreme objects solar system planet ninewonders of the universe dark twinwonders of the universe nova 30721 wonders of the universe 01 wonders of the universe Frankenstein Galaxynasa hubble crab nebulagalaxy UGC 477ceres bright craterscassini saturn dust illustrationFornax Clustergiant starsblack hole 0316Milky Way new photo galaxy orig vstan dlewis_00000000hubble NGC 4889loneliest planet biggest galaxyPlanet 9 superluminous supernova ASASSN-15lh Black hole 3double black hole 0831black holeJuice probe Jupiter01 Brown dwarf aurorasJupiter Venuseuropa 0529RCW 3401 Jupiter moons eclipse 0206Hubble galaxy smiley facegiant planetary ring systemMissing starsAndromeda galaxy02 Pillars of CreationHubble color galaxiesnebula abell 33 EMBARGOED TILL 0409Faraway GalaxiesStar Set to ExplodeThe Large Magellanic Cloud will catastrophically collide with the Milky Way in 2 billion years, according to a study published this month in the Monthly Notices of the Royal Astronomical Society. The impact, which they believe is long overdue, has a chance of sending our solar system “hurtling through space.”Our galaxy is orbited by smaller satellite galaxies, the kind of dance that can go on undisturbed for billions of years. Other times, things take a violent turn, and satellite galaxies can migrate toward the Milky Way until they collide and are gobbled up.Holy Cow: Was mysterious flare in space the birth of a black hole? Holy Cow: Was mysterious flare in space the birth of a black hole? Holy Cow: Was mysterious flare in space the birth of a black hole? The Large Magellanic Cloud is fairly new to orbiting the Milky Way, entering our corner of the universe 1.5 billion years ago. It’s now the brightest satellite galaxy we have, 163,000 light-years from the Milky Way. Previously, astronomers thought it would hang out in a quiet, long orbit or speed away from the gravity of the Milky Way and move on. But new measurements suggest that this little satellite galaxy was hiding a big secret, and it has a much larger mass than expected. This means the Large Magellanic Cloud is losing energy, which will trigger it to collide with the Milky Way.Read More”The destruction of the Large Magellanic Cloud, as it is devoured by the Milky Way, will wreak havoc with our galaxy, waking up the black hole that lives at its center and turning our galaxy into an ‘active galactic nucleus’ or quasar,” Marius Cautun, study author and postdoctoral fellow at Durham University’s Institute for Computational Cosmology, said in a statement.A second mysterious repeating fast radio burst has been detected in spaceA second mysterious repeating fast radio burst has been detected in spaceA second mysterious repeating fast radio burst has been detected in spaceWhat does that mean, exactly?”This phenomenon will generate powerful jets of high energy radiation emanating from just outside the black hole,” Cautun said. “While this will not affect our Solar System, there is a small chance that we might not escape unscathed from the collision between the two galaxies which could knock us out of the Milky Way and into interstellar space.”Although 2 billion years sounds like an incredible length of time for us, that’s much less than the age of the universe: 13.8 billion years. The Milky Way galaxy itself is about 13.5 billion years old, so hasn’t it survived galactic collisions before?Primitive life is possible on nearby exoplanet, scientists sayPrimitive life is possible on nearby exoplanet, scientists sayPrimitive life is possible on nearby exoplanet, scientists say “We think that up to now our galaxy has had only a few mergers with very low mass galaxies,” Alis Deason, study co-author and royal society university research fellow at the Durham University’s Institute for Computational Cosmology, said in a statement. “This represents very slim pickings when compared to nearby galaxies of the same size as the Milky Way. For example, our nearest neighbour, the Andromeda galaxy, devoured galaxies weighing nearly 30 times more than those consumed by the Milky Way. Therefore, the collision with the Large Magellanic Cloud is long overdue and it is needed to make our galaxy typical.”Long-lost sibling of the Milky Way shredded by cannibal galaxyLong-lost sibling of the Milky Way shredded by cannibal galaxyLong-lost sibling of the Milky Way shredded by cannibal galaxyIf it doesn’t send our solar system hurtling through space, the galactic show will be something to see from Earth’s perspective. And the researchers suggested that violent events have long shaped the universe.”Barring any disasters, like a major disturbance to the Solar System, our descendants, if any, are in for a treat: a spectacular display of cosmic fireworks as the newly awakened supermassive black hole at the centre of our galaxy reacts by emitting jets of extremely bright energetic radiation,” Carlos Frenk, study co-author and director for the Durham University’s Institute for Computational Cosmology, said in a statement.

Source Link:
https://www.cnn.com/2019/01/12/world/galactic-collision-milky-way/index.html

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