Scientists studying Saturn’s mysterious moon Enceladus say it may be one of the most promising places in our solar system to ...

The Central Intelligence Agency’s long secret experiments with psychic spying have become a magnet for some of the strangest ...

New research casts doubt on the prospects for a habitable, active environment beneath the frozen surface of Jupiter’s moon Europa.

Beneath Europa's icy shell lies an ocean vaster than Earth's. But is its hidden world buzzing with life, or silent as the grave? New study reveals answers.