The space agency's long-awaited Artemis I mission will have to wait until at least Friday, after a problem with one of the SLS rocket's engines was discovered.
NASA's Apollo missions already sent astronauts to the moon from 1969 to 1972. But scientists say there's still lots of good science to do there. The moon also could be an ideal stepping stone to Mars.
Researchers say high tide flooding in U.S. coastal regions will become more frequent in the mid-2030s because of climate change, amplified by a routine wobble in the moon's orbit.