Saturn moon 'may have an ocean'

Saturn's moon Enceladus could harbour a liquid water ocean beneath its icy crust, according to data sent back by the Cassini spacecraft.

Until Cassini reached Saturn, the tiny moon had received little attention.

But Enceladus is now the focus of intensive study following the discovery that it is geologically active.

Enceladus may possess reservoirs of near-surface liquid water that erupt to form geysers - and where there's water, there may be life, scientists argue.

These jets have been observed erupting from a "hot spot" in the moon's south polar region.

Scientists on the mission have likened them to the kinds of geysers found in Yellowstone National Park in the US.

Saturn moon 'may have an ocean'