astrobiology

Pyrite

Western Australia’s famous 3.5-billion-year-old stromatolites contain microbial remains of some of the earliest life on Earth, UNSW scientists have found.

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Jonathan Clarke has just returned from another mission to simulate life on Mars, this time from Devon Island in the Canadian Arctic.

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If there ever was life on Mars it may still be there, writes Malcolm Walter. And if we can demonstrate an independent origin of life, the consequences will be profound.

Mars 1

India's mission to Mars will search for methane and could reveal an important aspect about the history of water on the red planet, writes Malcolm Walter.

Curiosity

I have been searching for evidence of extra-terrestrial life since the 1980s. I believe that we will probably find it, writes Malcolm Walter.