ULA Probes Centaur Stage Incident

United Launch Alliance (ULA) is investigating an "anomaly" that occurred during the testing of its Centaur upper stage at Marshall Space Flight Center in Alabama on March 29. The incident resulted in a large explosion and dramatic visuals, but no injuries. The loss of the Centaur upper stage raises questions about ULA's schedule for the debut launch of its much-anticipated heavy-lift Vulcan rocket, which was already likely to slip into the summer based on the company's internal timelines. ULA has set a May 4 target date for the debut launch of the Vulcan rocket, but it remains unclear if this date will be impacted by the Centaur anomaly.