NASA’s Space Launch System (SLS) rocket and Orion spacecraft, secured to the mobile launcher, are seen at Launch Pad 39B, Saturday, Jan. 17, 2026, at NASA’s Kennedy Space Center in Florida. NASA/Joel Kowsky

Notices where this attachment appears

1. Embed this notice
   AkaSci 🛰️ (akasci@fosstodon.org)'s status on Saturday, 21-Feb-2026 08:08:10 JST AkaSci 🛰️

   in reply to

   The countdown for the Artemis II wet dress rehearsal began today at 8:13 p.m. EST, or L-48 hours, 40 minutes before the opening of a simulated launch window at 9 pm. Mon, Feb. 2. The test is expected to go until ~1 a.m. Feb. 3.

   Tests include loading cryogenic liquid propellant into the SLS rocket’s tanks, conducting a launch countdown, demonstrating the ability to recycle the countdown clock, and draining the tanks to practice scrub procedures.

   Details at
   https://www.nasa.gov/blogs/missions/2026/01/31/countdown-begins-for-artemis-ii-wet-dress-rehearsal/
   25/n