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Dark streaks on Mars bolster case for liquid water

Life

Dark streaks on Mars bolster case for liquid water

The seasonal appearance of streaks on sloped terrain suggests the Red Planet is no dust bowl

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Next Mars rover will climb a mountain

Life

Next Mars rover will climb a mountain

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Existence: Are we alone in the universe?

Life

Existence: Are we alone in the universe?

Features

Rover may tackle Kilimanjaro-sized mound on Mars

Life

Rover may tackle Kilimanjaro-sized mound on Mars

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Gold-mine worm shows animals could be living on Mars

Earth

Gold-mine worm shows animals could be living on Mars

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Colin Pillinger: What Mars rocks can tell us

Life

Colin Pillinger: What Mars rocks can tell us

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NASA floats Titan boat concept

Life

NASA floats Titan boat concept

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Astrobiology: The hunt for alien life

Life

Astrobiology: The hunt for alien life

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Astrobiology: Hot topics in the search for ET

Life

Astrobiology: Hot topics in the search for ET

Features

Astrobiology: Are we alone in the universe?

Life

Astrobiology: Are we alone in the universe?

It is only with the gigantic telescopes and interplanetary probes of the space age that we finally have a realistic hope of answering the question

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Life

Astrobiology: Are we unique?

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Earth

Asteroids make life's raw materials

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Life

Exo-evolution: Aliens who hide, survive

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Life

Revelations of stars' ages will be a boon for SETI

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