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Sotheby's is putting some rare items up for auction, including what it calls the largest piece of Mars ever found on Earth.
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Biggest piece of Mars on Earth, juvenile dinosaur skeleton up for auction at Sotheby'sSotheby's is putting some rare items up for auction, including what it calls the largest piece of Mars ever found on Earth.
NASA's Curiosity rover reveals that the Sun may be responsible for Mars' transformation into a lifeless desert, despite its Earth-like characteristics.
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