NASA Completes Repairs on SLS Rocket, Launch Window for Artemis II Set for April 2026
NASA has successfully repaired the Space Launch System (SLS) rocket, resolving a helium flow issue ahead of the Artemis II mission. The launch window is confirmed for April 2026, with the rocket expected to return to the launch pad by the end of March. Artemis II will be the first crewed mission to the Moon since Apollo 17 in 1972, involving a 10-day journey around the Moon with four astronauts. The agency is also restructuring its program, moving the first crewed lunar landing to Artemis IV, scheduled for 2028.

NASA has resolved a critical helium flow issue with the Space Launch System (SLS) rocket, maintaining the launch window for Artemis II in April 2026. The repair involved addressing a defective seal in a quick disconnect interface during a wet dress rehearsal test.
Following the repair, the rocket will return to the launch pad by the end of March. Artemis II will be a 10-day mission carrying four astronauts around the Moon, marking the first crewed lunar mission since Apollo 17 in 1972. Additionally, NASA has restructured the program, shifting the first crewed lunar landing to Artemis IV, now planned for 2028.




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