Scientists might have just found Earth's icy, distant cousin a few hundred million light-years away. HD 137010 b is one of thousands of exoplanets, or planets that orbit other stars, and is ...

Although astronomers have found thousands of exoplanets, the number of confirmed exomoons—and exorings—is still zero. But ...

If you've been following exoplanet research over the last couple of years, you've definitely heard of K2-18b. Located 124 ...

Documents might help scientists shed light on unexplained phenomena and government secrets, experts said.

A viral Obama podcast answer about aliens prompted Trump to accuse him of revealing secrets and promise to release UFO files ...