NASA cleared engineers to load more than 750,000 gallons of supercold propellants into the agency’s huge Space Launch System rocket Thursday in a second “wet dress rehearsal” countdown to verify leak ...

NASA started the countdown clock for Artemis II while SpaceX lined up another launch with a record-setting booster.

NASA ran into exasperating fuel leaks during a make-or-break test of its new moon rocket Monday, calling into question how soon astronauts could take off for a trip around the moon.The leaks — ...

Forecasters continue to predict an 80% chance of favorable weather on Wednesday for the launch of four astronauts on a flight to the moon.

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 ...