The helium system on the SLS upper stage —officially known as the Interim Cryogenic Propulsion Stage (ICPS)—performed well ...

NASA's new moon rocket has suffered another setback, almost certain to bump astronauts' Artemis II lunar mission into April.

The Pentagon and the Energy Department have airlifted a small nuclear reactor from California to Utah, demonstrating what they say is the potential for the U.S. to quickly deploy nuclear power for ...

The nearly 700-mile flight was hailed as a breakthrough for U.S. efforts to fast-track commercial licensing for microreactors ...

KENNEDY SPACE CENTER — Citing the proposed budget cuts by the Trump administration, NASA announced on Friday that after the Artemis III mission — where Americans will return to the moon — the rocket ...