Close observations of Saturn's moon Titan show that as it orbits it is deformed by Saturn's gravity. Here's an animation of what is seen, only slightly exaggerated:
Embedded video from
NASA Jet Propulsion Laboratory California Institute of Technology
This means that somewhere, deep down, Titan is a different phase of matter. It is a liquid moon. And where there's liquid flow could there be life?
Right now, who knows? The great part about this is that it's close enough that we can imagine taking a jaunt out to see. Of course, kind of hard to call it a jaunt when it's probably a one-way trip for any humans ...
[More information on this observation found here.]