Exploring icy moons

Probing the icy moons of Jupiter or Saturn offers the best chance to discover and study extra-terrestrial lifeforms that are currently active and evolving in the Solar System.

This artist's impression shows a concept for a future ocean world explorer.

Find out more about ESA's ambitions to visit an icy moon of Jupiter or Saturn

[Image description: In the foreground is a grey icy surface, with a small spacecraft stood on the surface. In the background on the right is the planet Saturn. At the top left is an orbiting spacecraft. The surface spacecraft, orbiting spacecraft and Saturn are all partly drawn with blue lines, indicating that they are a future concept.]