NASA and contractor engineers pumped more than 750,000 gallons of supercold propellants into the agency's huge Space Launch System rocket Thursday without any signs of hydrogen leaks in a major step ...

NASA’s Artemis II Space Launch System rocket (SLS) has begun a critical fueling test at Kennedy Space Center in Florida in preparation for the mission that will carry astronauts around the Moon.

NASA said on Tuesday that it was delaying its mission to send four astronauts on a journey around the moon, after issues arose during a critical test of its rocket. Mission managers were conducting an ...