NASA has moved to replace the long-planned Exploration Upper Stage for its Space Launch System rocket with United Launch Alliance’s Vulcan Centaur 5 upper stage, a shift that could reshape the Artemis ...

NASA's second multi-day test to simulate a launch day is underway in Florida in a critical demonstration of whether the agency's massive moon rocket is prepared to send astronauts on a lunar mission.

The agency recently delayed the Artemis 2 mission due to a liquid hydrogen leak that has plagued the SLS rocket. Reading time 2 minutes A recent test to confirm repairs to the Space Launch System (SLS ...