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Ice on Mercury

Space

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

Despite being the closest planet to the sun, Mercury has thick deposits of ice at its poles, and now we may understand the events that formed them over just one Mercurian 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

Space

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

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artist's concept of what exoplanet PSR J2322-2650b may look like

Space

Strange lemon-shaped exoplanet defies the rules of planet formation

A distant world with carbon in its atmosphere and extraordinarily high temperatures is unlike any other planet we’ve seen, and it’s unclear how it could have formed

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Space

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

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Space

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

Features

Space

A planet the size of Saturn could orbit the nearest sun-like star

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