Scientists have known for a while that Saturn's largest moon, Titan, has rivers and seas of liquid methane on its surface. But it's strangely lacking in deltas, a new study suggests. On Earth ...

Giant diamonds, big enough to be worn by Hollywood stars, could be raining down on Saturn and Jupiter ... "hail stones" eventually melt into a liquid sea in the planets' hot cores.

Saturn's largest moon, Titan, is the only body beyond Earth known to host stable bodies of liquid on its surface. | Credit: NASA/JPL/University of Arizona/University of Idaho Scientists have known ...