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Pluto’s Moons Offer Hints of Alien Worlds
Planet or not, Pluto and its newest moons may tell us a lot about how other worlds orbit distant...
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Newfound Object Is Faintest Distant Galaxy Seen at Universe’s Edge
Astronomers have found the faintest galaxy yet seen in the deep, distant reaches of space, an object whose light...
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Spy Telescopes Could Advance U.S. Dark Energy Mission
The two telescopes were designed to gaze down upon Earth from space to collect intelligence. Now, NASA hopes to...
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Supermassive Black Hole Ejected From Its Home Galaxy
The Chandra X-Ray Observatory announced that’s it has observed something unprcedented: a supermassive black hole being ejected from its...
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Cosmic Calculations: Astrophysicists Explore Where Stars Are Born
A University of Delaware-led research team reports an advance in the journal Science that may help astrophysicists more accurately...
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When Galaxies Collide
Astronomers have used the Hubble Space Telescope to work out when precisely our Milky Way Galaxy will crash into...
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Stars Reveal Early History of Milky Way
A new way to find a star’s age can give clues to how our Milky Way galaxy built itself...
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Massive Impacts May Have Warmed Ancient Mars
Cosmic impacts that once bombed Mars might have sent temperatures skyrocketing on the Red Planet in ancient times, enough...
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Ghostly Gamma-Ray Beams Blast From Milky Way’s Center
As galaxies go, our Milky Way is pretty quiet. Active galaxies have cores that glow brightly, powered by supermassive...
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Why Aliens Won’t Attack Earth
Despite what the movies tell us, any aliens that visit Earth probably won’t want to enslave or vaporize us,...