Within the lifetimes of today’s teenagers, some of the world’s most respected researchers now say the discovery of alien life ...

If life exists beyond Earth, water may be the first clue. Water Worlds explores the planets and moons where liquid water ...

High-energy particles zipping through the cosmos are harmful to life on Earth, but scientists think it could be food for potential alien life elsewhere. Saturn's moon Enceladus (shown here in a 2006 ...

At a young age, we're told how the sun warms Earth and makes life possible. That idea sticks with most of us for life. But when we want to understand things more thoroughly and we dig more deeply, we ...