A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

Deep beneath the Atlantic, an alien-like lost city of towering chimneys offers clues to life on Earth and other worlds.

Psychology suggests that adults who eat bananas with a spoon are rarely being strange or childish. More often, they are responding to fundamental human needs for comfort, familiarity, and a sense of ...

NASA wants to send an ambitious fleet of helicopters to soar through Martian skies—but scientists fear the endeavor could ...