Set the juice loose

A mosaic image of Enceladus created from data ...

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

While our planet only has one easily visible Moon, several other tiny objects arguably deserve the title too

Earth exists in a bubble. Our atmosphere forms a protective barrier between everything on the planet’s surface and the near-empty vastness of space. But it’s not the only bubble Earth sits inside. Bey

Might our universe – as vast as it is – be simply one of many? We look at the growing evidence that there’s more than one cosmos out there

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