Creative DIY projects you can do at home ...
Praxis co-founder Dryden Brown wants to build a city in Greenland that emulates what a community on Mars could be like.
NASA's Mars helicopter Ingenuity last flew on Mars. Watch the time-lapse, color images and stats from the flight. Credit: ...
Dirk Schulze-Makuch is a scientist who thinks NASA's Viking landers could have inadvertently destroyed the life they were ...