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Space

We've found a mysterious substance on Titan and Pluto

Something is absorbing light on the surfaces of Pluto and Saturn’s moon Titan, and figuring out what it is could be crucial to understanding Titan’s complex chemistry

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Ice on Mercury

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Mercury may have gained all of its unexpected water in a single day

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Space

The rings of Uranus are even stranger than we thought

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Space

Why the lack of water on Mars is so mysterious

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Space

Earth may have formed from two separate rings around the sun

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Space

How to see six planets in the sky at once in rare celestial alignment

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Space

Weird inside-out planet system may have formed one world at a time

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composite picture of Mars

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Mars's gravity may help control Earth’s cycle of ice ages

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Artist's impression of a free-floating-planet

Space

Rare Saturn-sized rogue planet is first to have its mass measured

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This is a false-color composite image of the Fomalhaut System taken with the Hubble telescope's Space Telescope Imaging Spectrograph (STIS) instrument in 2010 and 2012. The black circle at the center of the image blocks out the light from the bright star, allowing reflected light from the belt and planet to be photographed.

Space

Two asteroids crashed around a nearby star, solving a cosmic mystery

A pair of nascent planets have been caught smashing together around the nearby star Fomalhaut, and in doing so have solved the puzzle of its famous ‘planet’

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Space

Strange lemon-shaped exoplanet defies the rules of planet formation

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Rogue planet gains 6 billion tonnes per second in record growth spurt

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Ceres may have been habitable at just half a billion years old

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Space

6 of the most fascinating moments in the life of our solar system

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