Artemis II Rollback Delays Moon Mission

NASA's Artemis II moon rocket is being rolled back from the launch pad to the Vehicle Assembly Building on February 25 due to a critical helium system issue and adverse weather, a 12-hour journey. This setback will delay the highly anticipated crewed mission around the Moon until at least April 2026, pushing back humanity's first lunar flight in over half a century.

NASA is preparing to roll its Artemis II moon rocket back to the Vehicle Assembly Building (VAB) from the launch pad due to a helium system issue and adverse weather conditions, as reported by Live Science.
This rollback is scheduled for February 25 and is expected to take up to 12 hours for the 4-mile trek from Launch Pad 39B to the VAB, according to Space.com.
The move will delay the crewed mission around the Moon until at least April 2026, as confirmed by CTV News, pushing back humanity's first flight to the Moon in over half a century.
The primary reason for the rollback is to address a helium flow problem in the rocket's upper stage, which is crucial for pressurizing fuel tanks and maintaining environmental conditions for the engine.
This helium flow issue emerged during routine monitoring after a successful wet dress rehearsal on February 19, and engineers are investigating potential causes including problems with ground lines, a valve, or a filter.
The Artemis II mission has faced previous delays, including issues with hydrogen fuel leaks and a hatch pressurization valve, pushing its launch window from February to March, and now April.