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Story summary
- Artemis 2 rolled back to Launch Complex 39B on March 20 after high winds, targeting an April 1 launch.
- NASA resolved helium blockage in the rocket's upper stage and will not conduct fueling tests before launch.
- NASA has two-hour launch windows from April 1 to 6 and limits to four attempts.
- NASA will modify Centaur upper stages for Artemis 4 and 5 instead of developing Exploration Upper Stage.
