But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms ...

Alien solar systems that are home to so-called "hot Jupiters" — gas giants circling sizzlingly close to their stars — are unlikely homes for Earth-like planets, researchers say. Hot Jupiters get their ...

The mystery of the alien comet probe sent to steal all our solar system’s secrets (possibly…) just intensified, as a Harvard scientist has claimed it could be on a mission to Jupiter. Maverick ...

Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — which could make it hard for nutrients to get down to its buried ocean.

One of Saturn’s small, white moons has the perfect conditions for life in its icy crust-covered ocean. The vapor or gas contains hydrogen, one of the essential components of life. "A form of chemical ...