An artist's rendition of two Sinosauropteryx dinosaurs, showing their short, bristle-like feathers along the midline of the head, neck, back and around the tail, forming irregular stripes. Chuang Zhao and Lida Xing hide caption

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Listen Discovering Dinosaur Color From Fossilized Feathers

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In 2004, Comet C/2001 Q4 (NEAT), seen here, passed within 30 million miles of the Earth's orbit. A new report suggests that such near-Earth objects may go undetected by NASA, unless additional funding is provided. Courtesy of NASA hide caption

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Report: Funds Needed For Asteroid Warning System

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Space Shuttle Discovery lands at Edwards Air Force Base on Sept. 11, 2009. Discovery has been promised to the Smithsonian, but NASA's other two shuttles, Endeavour and Atlantis, are still up for grabs. NASA/David Huskey/WSTF hide caption

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Shuttle Keepsakes Up For Grabs

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White-rumped sandpiper chicks on northern Canada's Bylot Island. Laura McKinnon hide caption

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Extreme Migrations Spell Safety For Arctic Shorebirds

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A view of the central region of the Milky Way galaxy. Dark matter accounts for over 70% of the mass of the Milky Way, but because dark matter is invisible, all we see when we look up in the sky is a small amount of stars, planets and gas. AP/NASA hide caption

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Astronomers Map Dark Matter 'Beach Ball'

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Our sense of time can be influenced by things like drinking coffee, or being on an adrenaline rush from an amusement park ride like this one at Dreamworld in Australia. Bradley Kanaris/Getty Images hide caption

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Make Time Fly And You'll Have More Fun

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Newly Discovered Planet Could Be A Watery World

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NASA Telescope To Spot Nearby Space Neighbors

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More Stem Cells Get OK For Government Funding

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This Year, No Turkey Feast For Shuttle Astronauts

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Study: Political Bent Affects How We View Skin Tone

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The Wide Field and Planetary Camera 2, now on display at the Smithsonian's National Air and Space Museum, returned to Earth in May 2009 after more than 15 years in orbit. Eric Long/NASM hide caption

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Camera That Saved Hubble Now On Display

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The presence of water on the moon could enable astronauts to make their own breathing oxygen and to use the moon as sort of a space-based filling station. NASA/AP hide caption

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Water Ice Hides In Moon's Dark Craters

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A new study suggests that a high-fat and high-sugar diet can dramatically affect the microbes living in your gut. istockphoto.com hide caption

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The Gut Response To What We Eat

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