A look at the question of whether we may have found signs of alien life.

A rocky world orbiting within its star’s habitable zone may be surrounded by a helium-rich atmosphere, providing the ...

Researchers found this material on the meteorite, which entered Earth's atmosphere moving faster than the speed of sound.

Scientists have detected liquid water beneath Mars' south pole ice layers, revealing a hidden lake about 12 miles wide. This salty water remains liquid despite the extreme cold, raising exciting ...

The Original Series, the tight budget constraints are part of what led to the creation of its most iconic character.