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How an active mantle plume can push the surface of Mars
GLOBAL EYE
One of the most important features of extrasolar planets is whether they have an atmosphere or not. For astrobiology in particular, small, rocky planets blanketed with an atmosphere offer the best hop
A mosaic image of Enceladus created from data ...
While our planet only has one easily visible Moon, several other tiny objects arguably deserve the title too
We’ve had a few false alarms before – including fossilised microbes and signs of carbon dioxide production in Martian rocks – but NASA has now cautiously suggested it’s found signs that life once exis