NASA officials are holding a press conference after the scheduled Monday launch of the Artemis I was scrubbed due to a hydrogen fuel leak and a problem getting one of the rocket’s engines to the proper temperature range, according to the agency.

Officials are expected to give further details on why the launch was scrubbed and when the next launch attempt will be scheduled for. The next available day for a launch at Cape Canaveral, Florida, is Friday, Sept. 2, but officials will need to determine whether that date is feasible.