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.

As NASA completes final preparations for the Artemis II mission, including a critical 'wet dress rehearsal,' former astronaut Leroy Chiao spoke with NBC News' Brian Cheung about the anticipated missio...

The planned Artemis II crew includes three U.S. astronauts - ⁠Reid Wiseman, Victor Glover and Christina Koch - and ​a Canadian astronaut, Jeremy Hansen.