NASA's Curiosity rover has found evidence for life-supporting conditions on ancient Mars.
The Kepler space telescope has shown us that we live in a galaxy full of Earth-sized planets.
Looking for a seaside vacation spot? Consider Saturn's largest moon, Titan. There's no chance of getting sunburned, but you'll want to take a heavy parka...
"Where Is Everybody?" Learn about the Fermi Paradox on this Moment of Science.