Space
Pluto must have liquid ocean or it’d look like an overripe peach
If Pluto鈥檚 inner sea froze recently, we should see ridges popping up in the dwarf planet's outer shell. Since we don鈥檛, it's probably still liquid
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Space
Asteroids keep their rings safe from gas giants鈥� clutches
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Space
How the sun abducted dwarf planets from an alien solar system
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Space
Flamingo stars turn pink when they gobble iron-rich planets
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Earth
Cranky young sun could have kickstarted life on Earth
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Life
Pinball planets: How life could start in a violent solar system
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Space
Unnamed dwarf planet may be third largest in the solar system
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Space
First global Mercury map shows its hills and valleys in detail
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Space
How to watch Mercury pass in front of the sun today
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Earth
Last days of Earth: Life in 7 billion years AD
Earth won't always be a blue marble. What kind of animals will survive as mountains disappear, oceans spread and the planet fries 鈥� and where will they hide?
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Space
Never-before-seen moon spotted around dwarf planet Makemake
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Space
Cassini gears up for final fiery plunge into Saturn’s atmosphere
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Earth
How two tiny dots defy the history of life and the solar system
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Physics
We are closing in on possible whereabouts of Planet Nine
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