Artemis I launch updates: Saturday launch scrubbed after reoccurring liquid hydrogen leak
It comes after the launch was scrubbed Monday due to an engine problem.
NASA kicked off Monday its plan to send an unmanned space capsule into the moon’s orbit, marking the initial launch in an ambitious plan to establish a long term presence on the moon for scientific discovery and economic development.
The space capsule, called Artemis I, will travel for roughly 40 days -- reaching as close as 60 miles from the moon, and then 40,000 miles above the moon when orbiting over its dark side -- before landing in the Pacific Ocean off the coast of San Diego.
After the launch was scrubbed, the next attempt will occur Sept. 3.
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NASA scrubs Artemis I launch
NASA announced a few minutes after Artemis I was initially scheduled to lift off that the launch has been scrubbed.
Engineers said the problem came from a liquid hydrogen line that was not chilled enough inside one of the rocket’s four core-stage engines, which needs to occur before they can be ignited.
The next attempt will occur on Sept. 2.
Artemis launch delayed due to storms, rocket troubleshooting
Artemis I will likely not be launching at 8:33 a.m. ET as originally planned after NASA ran into several delays in its preparation to send it into space.
The process of tanking, which includes filling the rocket's core stage with liquid oxygen and liquid hydrogen, was delayed due to some passing storms and lightning in the area, NASA said.
Moreover, a leak was discovered in the hydrogen fuel line, which NASA quickly resolved. The leak concentration was “at an acceptable level,” NASA said.
Engineers also discovered a potential crack in the inner stage flange, which connects two of the rocket's cylinders.
The countdown clock is currently paused at T-40 and the launch can go as late as 10:33 a.m. ET If that window passes, the next attempt at launch will be Sept. 2
Artemis not launching Friday due to weather, NASA says
NASA officials said the Artemis I new launch date that was initially scheduled for Friday had to be moved due to bad weather.
The weather is 60% no go for Friday but looks to be more favorable Saturday.
"Looking forward to Saturday, weather would be a little bit different than what we experienced yesterday," Mark Berger, launch weather officer with the U.S. Space Force's 45th Weather Squadron, said during a media briefing Tuesday. "We will have a fairly strong onshore flow, and so that does favor showers and possibly a few thunderstorms moving in from the coast during the morning and early afternoon hours."
He added, "I'm optimistic that we'll have at least some clear air to work with during the afternoon to count on Saturday."
The window for launch on Saturday kicks off at 2:17 p.m. ET and ends at 4:17 p.m. ET. If need be, the launch can be pushed back to Monday.
If the launch does not occur by Monday, Artemis I will have to roll back to the Vehicle Assembly Building and won’t be able to launch until later in September.
This is because the flight termination batteries, which allow Artemis to be blown up if it veers off course, run low after 25 days.
-ABC News' Gio Benitez and Gina Sunseri