
NASA's Artemis I mega moon rocket's next prelaunch test attempt begins Tuesday
CNN
NASA's Artemis I mission to the moon will make a third attempt at its most critical and final prelaunch test beginning on Tuesday, according to the agency.
The mission team plans to start fueling the 322-foot-tall (98-meter-tall) Artemis I rocket stack, including NASA's Space Launch System and Orion spacecraft, on Thursday.
The test, known as the wet dress rehearsal, has been adjusted in response to an issue encountered during preparations for the third attempt that took place over the weekend. Engineers identified a helium check valve that wasn't functioning. The valve is difficult to reach while the rocket sits on the launchpad, but it can be replaced or fixed later. The modified version of the wet dress rehearsal is necessary to ensure the safety of the rocket's flight hardware.