NASA says an "interrupted flow" of helium to the rocket system could require a rollback to the Vehicle Assembly Building. If ...

NASA may delay its mission to send astronauts to the moon for the first time in more than half a century after discovering a ...

The Apollo missions changed how scientists understand the moon. Returning with Artemis could help solve some of the biggest lunar mysteries.

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