WASHINGTON — In the past decade and a half, every U.S. agency that operates spacecraft has come to depend on one particular style of Russian-designed, kerosene-fueled rocket engine, made by former ...

The clock is ticking on the ISS (International Space Station), so the pressure for a replacement is increasing – preferably with a much more comfortable, functional, and future-proof habitat. The LOOP ...

Dr. Christophe Lasseur, coordinator of the European Space Agency's Micro-Ecological Life Support System Alternative (MELISSA), studies how to keep astronauts alive in space by recycling their waste ...

SpaceX’s giant Starship rocket may have exploded during launch this week. However, that does not mean that Elon, or humanity for that matter, is not determined to enter a new era of space exploration.

Nuclear thermal propulsion, which uses heat from nuclear reactions as fuel, could be used one day in human spaceflight, possibly even for missions to Mars. Its development, however, poses a challenge.