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  1. NASA postpones second SLS Green Run test  SpaceNews
  2. NASA Welds First Confidence Article for New SLS Rocket Stage  NASA
  3. View Full coverage on Google News
NASA announced Feb. 22 that the SLS Green Run static-fire from Feb. 25 test would be delayed because of a valve problem.NASA announced Feb. 22 that the SLS Green Run static-fire from Feb. 25 test would be delayed because of a valve problem.

NASA postpones second SLS Green Run test - SpaceNews