NASA is targeting April 1 for the launch of Artemis II, sending four astronauts—including NASA’s Reid Wiseman, Victor Glover, Christina Koch, and CSA’s Jeremy Hansen—on a 10-day mission around the moon.

The new launch date follows a successful flight readiness review and the resolution of a helium system issue in the rocket’s fuel tanks, which required replacing a faulty seal.

The rocket will be returned to the launch pad after repairs, with final preparations continuing in the Vehicle Assembly Building and at the pad.

The crew will enter quarantine on March 18 in Houston and travel to Florida on March 27 ahead of the launch window of April 1–6, NPR has reported.

If successful, Artemis II will become the first human lunar mission since Apollo 17 in 1972.