Scientists are excited when NASA's Cassini spacecraft found evidence of liquid water on Enceladus, one of Saturn's moons.
“We realize that this is a radical conclusion – that we may have evidence for liquid water within a body so small and so cold,” said Dr. Carolyn Porco, Cassini imaging team leader at the Space Science Institute in Boulder, Colo., and the lead author of the Science report. “However, if we are right, we have significantly broadened the diversity of solar system environments where we might possibly have conditions suitable for living organisms. It doesn’t get any more exciting than this.”