NASA postpones Artemis II crewed moon mission to at least March after detecting liquid hydrogen leak during SLS rocket's wet dress rehearsal.

NASA has delayed the launch of Artemis II, a mission that would send astronauts to the moon for the first time in more than 50 years, after a fuel test uncovered hydrogen leaks.

During a “wet dress rehearsal” of launch procedures on Monday, flight crews managed to completely fill the rocket with cryogenically cooled liquid hydrogen and oxygen propellant.