Salt deposits suggest salinity was commonly above what terrestrial life can tolerate
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Hypothesis may aid understanding of early Earth
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They might have been cradles of Martian life
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Earth's tilt brought on the ice, scientist says
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Window for life opened only recently, astronomically speaking
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It's likely that planetary systems like our own are common
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Growing planets must fight for survival against their suns
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Formed at least 50 million years earlier than previously believed
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Researcher devotes himself to understanding what shapes the planet
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Three more boosts total to 11 known Neptune satellites
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