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NASA finds multi-billion-year-old 'coral' on MarsNASA's Curiosity rover has snapped black and white images of a rock on the Martian surface that looks remarkably like a piece of coral.
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If aliens existed on Mars 3.7 billion years ago, they would have needed umbrellasA vast network of inverted channels, formed of sediment laid by ancient rivers, implies Mars was once a much rainier place than we thought.
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Largest known Martian meteorite on Earth sells for $5.3 million at auctionThe largest known Martian meteorite, NWA 16788, has been sold at auction for $5.3 million. The hefty chunk of the Red Planet, which weighs 54 pounds, could help unravel new secrets about Mars — if it's allowed to be studied.
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Could signs of Mars life be hidden in its thick layers of clay?The thick, mineral-rich layers of clay found on Mars suggest that the Red Planet harbored potentially life-hosting environments for long stretches in the ancient past, a new study suggests.
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Mystery of Mars' missing water could be solved by the planet's tipsy tiltMars has lost immense amounts of water over it lifetime, and scientists aren't sure exactly how. New research hints that the planet's violently varying tilt may be a key factor.
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Does Mars have a moon?Mars is smaller than Earth, but does it have any moons?
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Why does Mars look purple, yellow and orange in ESA's stunning new satellite image?Surprising colors and stunning features are captured in a new image of Mars' surface.
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Mars rover captures first close-up photos of giant 'spiderwebs' on the Red PlanetNASA's Curiosity rover has snapped its first images of web-like "boxwork" features on the surface of Mars. The zig-zagging rocks could provide clues about the Red Planet's watery past and whether it once harbored extraterrestrial life.
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Is Mars really red? A physicist explains the truth.Mars isn't a bright, fire-engine red, but the iron oxide in its rocks makes it appear redder than other planets, especially from afar.
