We’ve discovered thousands of exoplanets — but not a single confirmed exomoon. That doesn’t mean they aren’t out there. In ...

If you've been following exoplanet research over the last couple of years, you've definitely heard of K2-18b. Located 124 light years away in the constellation Leo, it's attracted a lot of attention ...

NASA’s Europa Clipper mission will perform 49 close flybys of Jupiter’s icy moon, where radiation levels reach 5,400 milliSieverts per day — lethal within hours. Beneath its frozen crust may lie a ...

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

Four years after Russia's full-scale invasion of Ukraine, U.N. Secretary General Antonio Guterres said in a statement Tuesday ...

The Guthrie family is offering up to $1 million as a reward for information that leads to the recovery of Nancy Guthrie, ...

If you think auroras on Earth are a strange and mesmerizing sight, that's nothing like what occurs on the perplexing world of Uranus.