FINAL COUNTDOWN! - Artemis 1 Wet Dress Rehearsal

LIVE! Artemis 1 Wet Dress Rehearsal
#NASA #WetDressRehearsal #Artemis

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Join us LIVE from Pad 39B at NASA Kennedy Space Center as NASA conducts a Wet Dress Rehearsal of their Next Generation Moon Rocket the Space Launch System (SLS)!

During the test, the launch teams will rehearse operations to load propellant into the rocket’s tanks, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and drain the tanks to give them an opportunity to practice the timelines and procedures they will use for launch.

TIMELINE UPDATES:
Core stage chilldown is now estimated to start at 9:05 a.m. EDT
Updated T-0 is now 4:30 p.m. EDT.

TIMELINE:
Saturday, June 18
- L-45h 40m, Launch teams arrive at their stations.
- L-45h, Sound suppression system water tank filled.
- L-41h, Orion spacecraft power up start.

Sunday, June 19
- L-35h 20m, SLS core stage powered up.
- L-30h 30m, Final prep of four RS-25 engines complete.

Monday, June 20
- L-12h 50m, SLS interim cryogenic propulsion stage (ICPS) powered up.
- L-12h, All non-essential personnel leave LC-39B.
- L-8h 40m, Built-in 90-minute hold begins.
- L-8h 20m, Weather & tanking briefing.
- L-7h 50m, "Go" / "no-go" poll to begin tanking the rocket.
- L-7h 40m, NASA live commentary of tanking operations begins (will be included here in this stream).
- 7:35 am - 12:40 pm EDT (11:35-16:40 UTC) Core stage and ICPS fueling operations and tests.
- L-4h 20m, Orion comm system activation.
- L-40m, Final NASA test director briefing; built-in 30-minute hold begins.
- L-15m, "Go" / "no-go" poll for terminal count.
- T-10 minutes countdown begins for WDR Run 1.
- -33 seconds, "Cut-off" command automatically executed.
Vehicle will be "safed", and recycled back to T-10 minutes for WRD Run 2. Recycling will take about 1 hour.
- T-10 minutes countdown begins for WDR Run 2.

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BROADCAST TIMELINE
00:00:00 - Start of Stream

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