Titan

Cassini is sending back mixed signals from Titan. It seems as though the 'mountains' on Titan do no possess the normal amount of gravity for a rock formation of that mass on a moon of that size. Generally around mountains there is a greater pull as their is so much more mass, but on Titan that is not the case. This has lead some to speculate that Saturn's moon is actually covered in a rigid ice sheet and the mountains we see are actually icebergs of biblical proportions.

This means the moon isn't as geologically active as we had at first suspected.

The verdict is still out on this however and the old fly by has to do more research, or alternatively, we need to get more boots on the ground . . . and by more, I mean one.

Nasa