氦气加压问题导致NASA将Artemis II火箭撤回装配大楼，发射推迟至四月

NASA has moved its Artemis II rocket off the launch pad and back into the Vehicle Assembly Building after engineers identified a helium pressurization issue during testing, pushing the mission’s targeted liftoff to no earlier than April. The rollback affects the highly anticipated crewed mission that will send four astronauts on a journey around the Moon, marking the first human flight of the Artemis program and the first crewed lunar mission since Apollo. Originally targeting an early February launch window, the mission encountered technical complications during fueling tests, prompting NASA to take a more cautious approach. …