NASA will update us all on its Artemis 1 moon rocket test today. Here's how to listen live.

Editor's note: NASA is having technical issues with its Artemis 1 moon mission update feed above. It is currently offline.

NASA will provide an update about its Artemis 1 moon mission today (Sept. 23), and you can listen live.

The Artemis 1 press briefing is scheduled to start at 12:30 p.m. EDT (1630 GMT). You can listen here at, courtesy of NASA, or directly via the space agency. (It appears the briefing will be audio-only.)

Participating in the call will be:

  • Tom Whitmeyer, deputy associate administrator, Common Exploration Systems Development, NASA headquarters
  • Brad McCain, vice president and general manager, Jacobs Space Operations Group
  • John Blevins, Space Launch System (SLS) chief engineer, NASA's Marshall Space Flight Center

Related: NASA's Artemis 1 moon mission: Live updates
More: 10 wild facts about the Artemis 1 moon mission

The Artemis 1 moon rocket on the pad at NASA's Kennedy Space Center in Florida on Sept. 21, 2022, the day it underwent a crucial fueling test. (Image credit: NASA's Kennedy Space Center via Twitter)

Artemis 1 is the first mission of NASA's Artemis program of moon exploration. It will use an SLS megarocket to launch an uncrewed Orion capsule on a long journey to lunar orbit and back.

NASA tried to launch Artemis 1 on Aug. 29 and Sept. 3 but was foiled by glitches both times. The Sept. 3 issue was a leak of liquid hydrogen propellant, which the mission team addressed by replacing two seals at the affected area, a "quick disconnect" linking the SLS core stage with a fuel line from its mobile launch tower.

The Artemis 1 team performed a fueling test on Wednesday (Sept. 21), and the fix held; the team detected a leak but managed to bring it down to manageable levels. All the objectives were met during Wednesday's test, so "teams are fine-tuning procedures for the next launch opportunity, targeted for no earlier than Sept. 27," NASA officials wrote in an update on Thursday (Sept. 22).

Today's press briefing will give us more details about those procedures and the mission team's plans going forward.

Those plans are contingent on several factors in addition to the leak repair. For example, NASA has applied for a waiver from the U.S. Space Force to extend the certification of the Artemis 1 flight termination system (FTS), which is designed to destroy the SLS if something goes wrong during launch. (The Space Force oversees the Eastern Range for rocket launches.)

The FTS was certified for 25 days and has exceeded that deadline. If the waiver isn't granted, NASA will have to roll the Artemis 1 stack off its launch pad at Kennedy Space Center in Florida back to the facility's huge Vehicle Assembly Building for recertification. 

Then there's the weather, which is always a concern on Florida's hot and stormy Space Coast. 

Mike Wall is the author of "Out There" (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or on Facebook.  

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Mike Wall
Senior Space Writer

Michael Wall is a Senior Space Writer with and joined the team in 2010. He primarily covers exoplanets, spaceflight and military space, but has been known to dabble in the space art beat. His book about the search for alien life, "Out There," was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what his latest project is, you can follow Michael on Twitter.