Falcon 9

NASA bumps Artemis countdown rehearsal until after Axiom crew launch

NASA officials said Tuesday they are standing down from a cryogenic loading test on the agency’s Space Launch System moon rocket until after the launch of a commercial crew mission from a neighboring pad at the Kennedy Space Center. A countdown test Monday was delayed by what NASA managers characterized as minor issues, including a liquid oxygen temperature concern and a manual valve that was left in the wrong configuration before teams evacuated the SLS launch pad.

Mission Reports

Ground system problem halts Artemis 1 countdown dress rehearsal

NASA launch controllers called off plans to load super-cold liquid hydrogen and liquid oxygen into the first fully-assembled Space Launch System moon rocket Sunday for a countdown dress rehearsal, giving time for ground teams to troubleshoot problems with fans used to ventilate the giant rocket’s mobile launch structure at the Kennedy Space Center.

Mission Reports

Artemis 1 wet dress rehearsal timeline

This timeline covers major countdown activities planned during the NASA’s wet dress rehearsal for the Artemis 1 mission. The wet dress rehearsal will include loading of more than 700,000 gallons of cryogenic liquid hydrogen and liquid oxygen into the Space Launch System moon rocket on launch pad 39B at the Kennedy Space Center in Florida.