AkaSci 🛰️ @AkaSci@fosstodon.org
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"The Artemis II wet dress rehearsal ended today at 10:16 p.m., concluding as planned at T-29 seconds in the countdown.

NASA will hold a media briefing about the test at 11 a.m., Friday, Feb. 20."

nasa.gov/blogs/missions/2026/0
30/n

A side view of the launch pad where the Artemis II SLS rocket and Orion spacecraft sit on top of the mobile launcher. It shows one of the white twin SLS solid rocket boosters, orange core stage, and Orion spacecraft.

LIVE: Artemis II Wet Dress Rehearsal Coverage - NASA

Live updates for the Artemis II wet dress rehearsal will be published on this page. Live views of the launch pad and test are available online. All times are

www.nasa.gov · NASA

AkaSci 🛰️ @AkaSci@fosstodon.org
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Oh no! A day after the successful wet dress rehearsal, NASA has detected a helium flow issue with the Artemis II rocket that will require a rollback to the Vehicle Assembly Building for diagnosis and repair. The March 6 launch window will likely be missed.

NASA Admin Isaacman wrote about potential faults -
- the final filter between the ground and flight vehicle, located on the umbilical
- a failed QD umbilical interface
- a failed check valve onboard the vehicle

nasa.gov/blogs/missions/2026/0
31/n

The Artemis II SLS rocket and Orion spacecraft at the launch pad under a blue sky.

NASA Troubleshooting Artemis II Rocket Upper Stage Issue

Editor’s note: NASA has updated an earlier version of this blog to provide additional details.

www.nasa.gov · NASA

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