Environment
NASA orbiter shows Mars lost 90 per cent of its CO2 to space
The MAVEN spacecraft has completed the key part of its mission: to track down how much argon Mars鈥檚 atmosphere is giving up as a proxy for carbon dioxide loss
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Space
ExoMars dips into the Martian atmosphere to sniff for life
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Space
Mysterious water-like streaks on Mars might be sand flows instead
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Space
NASA’s new budget is big on other worlds but ignores our own
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Space
Mars might already be building rings from its moons
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Space
The Mars paradox: Why we still don’t understand water on Mars
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Space
Mars landing sites for 2020 NASA mission down to the final three
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Space
Oxygen ions sent from Earth have been spotted on the moon
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Life
Dried-up slime could help microbes survive briny waters on Mars
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Space
Dried-up slime could help microbes survive briny waters on Mars
Colonies of bacteria called biofilms live longer in Mars-like waters 鈥� especially if they were dried out first, as they would be after hitching a ride through space
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Space
Curiosity finds Mars rock that may be a meteorite made from iron
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Earth
Of presidents and planets: Neil deGrasse Tyson looks ahead
Features
Space
Four extreme environments where humans are tasting life on Mars
Features
Life
My year on Mars: Frontier life of a space doctor
Features