Artemis I Launch: NASA’s Moon Mission Launch Called Off After Engine Issue

This is disappointing, Aerojet Rocketdyne Holdings, said there are no early indications that Monday’s Artemis I launch was scrubbed because of problems with its four RS-25 engines, according to a company spokesman. He said engineers are focused on issues with the bleed lines used to regulate engine temperature. Engines have to reach a certain temperature prior to takeoff.

Nest launch window is Sept 2nd.