This story was updated at 3:00 p.m. EST. It's official: Primitive life could have lived on ancient Mars, NASA says. A sample of Mars drilled from a rock by NASA's Curiosity rover and then studied by ...

Blacksburg, Va. -- Primitive microorganisms provide important clues as to how all creatures employ a basic regulatory mechanism to conduct the business of life. Peter Kennelly, professor of ...

NASA's Europa Clipper probe blasted off from Florida on Monday, bound for an icy moon of Jupiter to discover whether it has the ingredients to support life. Is there anywhere else in our solar system ...

SEATTLE — A Mars sample that NASA’s Curiosity rover drilled from a rock and studied with its on-board instruments “shows ancient Mars could have supported living microbes,” NASA officials announced ...

A new analysis of the oldest known fossil microorganisms provides strong evidence to support an increasingly widespread understanding that life in the universe is common. J. William Schopf and ...