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We Finally Know What Happened to Water on Mars
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Astronomers Have Discovered the Oldest Stars Ever Seen in Our Galaxy
Scientists Identify 20 Alien Worlds Most Likely To Be Like Earth
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Scientists Predict the Alps Will Lose 70 Percent of Its Snow by 2100
Medieval Supernova Lit Earth’s Skies for Months
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Cygnus Is the Cutest of the Space Station Cargo Craft.
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