51¶¯Âþ

Mars

NASA's new budget is big on other worlds but ignores our own

Space

NASA's new budget is big on other worlds but ignores our own

The NASA Transition and Authorization Act instructs the space agency to send humans to Mars, robots to Europa and look for life - but not to study Earth

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Artist's impression of a grandly ringed future Mars

Space

Mars might already be building rings from its moons

51¶¯Âþ

frozen Mars

Space

The Mars paradox: Why we still don't understand water on Mars

Analysis

Mars landing sites for 2020 NASA mission down to the final three

Space

Mars landing sites for 2020 NASA mission down to the final three

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Oxygen ions sent from Earth have been spotted on the moon

Space

Oxygen ions sent from Earth have been spotted on the moon

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biofilms

Life

Dried-up slime could help microbes survive briny waters on Mars

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Dried-up slime could help microbes survive briny waters on Mars

Space

Dried-up slime could help microbes survive briny waters on Mars

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This smooth rock may be a metal meteorite on Mars

Space

Curiosity finds Mars rock that may be a meteorite made from iron

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Tyson

Earth

Of presidents and planets: Neil deGrasse Tyson looks ahead

Features

Reddish geology of Utah desert

Space

Four extreme environments where humans are tasting life on Mars

Space agencies use some of Earth’s extreme habitats to fine-tune techniques for a trip to the Red Planet. 51¶¯Âþ gathered postcards from four of them

Features

Space

Mars should have loads more water – so where has it all gone?

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Life

My year on Mars: Frontier life of a space doctor

Features

Space

A dash of hydrogen and methane could have kept Mars warm

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Space

The world in 2076: Thousands of people have settled on Mars

Features

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