The Potential for Life in Subsurface Oceans

Moons with subsurface oceans may be very, very common out there in the universe. We have quite a bit of them in our own solar system. It's interesting to think that there may be more life in subsurfaced oceans in the galaxy than on the surface of planets. And you can imagine what else they may discover using being able to just figure out the clues and data that we've already collected.