NASA has postponed key milestones for its Artemis II mission, delaying both a critical pre-launch fuelling test and the earliest possible liftoff of the historic crewed Moon mission.
The delay comes as an unusual Arctic cold wave grips Florida, bringing freezing temperatures and strong winds to the Kennedy Space Center. The adverse conditions have prompted engineers to prioritise the protection of the Space Launch System (SLS) rocket and the Orion spacecraft, which are highly sensitive to extreme cold.
Florida’s space coast, typically known for its mild climate, rarely faces such frigid conditions. The current cold snap poses a tangible risk to flight hardware, forcing teams to deploy specialised heaters and environmental controls to safeguard Orion.
NASA officials said the weather made it unsafe to proceed with the wet dress rehearsal, a critical test that involves loading more than 700,000 gallons of cryogenic propellants into the rocket. Conducting the operation under freezing conditions would violate safety protocols designed to protect both equipment and personnel.
Revised Timeline
The wet dress rehearsal, originally scheduled for the weekend, has now been rescheduled for February 2. This test is the final full-scale simulation of launch day procedures and serves as the last major technical checkpoint before the crewed flight.
As a result, the previously targeted launch windows of February 6 and 7 are no longer feasible. NASA now says the earliest possible launch date for Artemis II is February 8, provided the rehearsal is completed successfully and no further issues arise.
The mission will carry four astronauts — Reid Wiseman, Victor Glover, Christina Koch, and Canadian Space Agency astronaut Jeremy Hansen — on a journey around the Moon. It marks humanity’s return to lunar orbit for the first time in more than 50 years.
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