NASA on Thursday was conducting a new rehearsal of the launch of its massive SLS rocket, which will send astronauts around the Moon for the first time in over 50 years as part of the Artemis 2 mission.
Technical problems in early February cut short an initial so-called wet
dress rehearsal.
The setback, which included a liquid hydrogen leak, dashed hopes of a lift-off this month, pushing the earliest possible launch date back to March 6.
If Thursday's tests are successful, NASA will then set a firm date for the mission.