After soaring skyward due east, the rocket's first-stage booster landed aboard SpaceX's drone ship Just Read the Instructions ...

Test your knowledge of iconic U.S. astronauts and their historic space missions. This quiz covers pioneering achievements, ...

Several hundred current and former NASA employees, including at least four retired astronauts, backed a letter that opposes ...

While terrifying, there's an overlooked NASA spacewalk which looks equally terrifying to untrained Earth-dwellers. In 1984, ...