SpaceX is poised for its next Starship megarocket test flight on Tuesday, with US President-elect Donald Trump expected to ...

NASA's earliest landers on Mars may have accidentally killed life there, says an astrobiologist. According to Dirk Schulze-Makuch from Germany's Technische Universität Berlin, the method of finding ...

NASA scientists are hoping to understand the history of where they found the rocks — and for evidence of ancient microbial ...