Signs of li fe

A mosaic image of Enceladus created from data ...

Enceladus is a medium-sized moon of Saturn made up of a crust of water-ice and an ocean of liquid water below. This ocean is in some senses similar to those on Earth and is connected directly to Encel

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

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

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

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