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solar system

Astrophile: Saturn's egg moon Methone is made of fluff

Space

Astrophile: Saturn's egg moon Methone is made of fluff

Sitting in an icy nest near Saturn, tiny Methone is oddly smooth, perhaps because it is made of lightweight stuff that can flow to erase impact scars

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Why Mercury is a hard orange, not a soft peach

Space

Why Mercury is a hard orange, not a soft peach

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Moon water came from young wet Earth

Space

Moon water came from young wet Earth

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Supersonic cosmic winds blew up giant galactic bubbles

Space

Supersonic cosmic winds blew up giant galactic bubbles

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Jupiter got a soaking from comet Shoemaker-Levy 9

Space

Jupiter got a soaking from comet Shoemaker-Levy 9

Regulars

Closest exoplanet sparks international naming fight

Space

Closest exoplanet sparks international naming fight

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Saturn's rings leave ghostly imprint on atmosphere

Space

Saturn's rings leave ghostly imprint on atmosphere

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Meteorites could have been source of life's batteries

Life

Meteorites could have been source of life's batteries

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Astrophile: Mighty Trojan found marching with Uranus

Space

Astrophile: Mighty Trojan found marching with Uranus

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Rover finds first life-friendly environment on Mars

Life

Rover finds first life-friendly environment on Mars

Curiosity's first sample of drilled Martian rock shows traces of ancient water that would have been fresh enough to support microbes – and perhaps even drink

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Space

Salty water oozes up from Jupiter moon's hidden ocean

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Space

Mystery ring of radiation briefly encircled Earth

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Space

Space miners hope to build first off-Earth economy

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Space

First private Mars mission aims to launch in 2018

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