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Astronomy | Helix Nebula | About 700 light years away sits the expanding death cry of a star: the Helix Nebula, a four-light-year wide gas cloud blasted out when a star that was once like... 
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(PhysOrg.com) -- With the holiday season in full swing, a new image from an assembly of telescopes has revealed an unusual cosmic ornament.
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In the supernova remnant W49B, Suzaku found fossil fireball. It detected X-rays produced when heavily ionized iron atoms recapture an electron.
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On Wednesday, Jan. 18, astronomers, physicists and scientists from related fields will convene in Tucson, Ariz. from across the world to discuss an endeavor that only a few years ago would have been regarded as nothing less than outrageous.
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Western Pacific As Seen From the International Space Station (Expedition 25)...
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