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Forum: Exploration: Moon to Mars
Topic: NASA's Artemis II mission (Orion/SLS)

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Message to Edit: HTML is ON UBB Code is ON Smilies Legend	Originally posted by Robert Pearlman on 02-02-2026 03:51 PM NASA release <blockquote><font size="+0">[b]Core Stage Liquid Hydrogen in Topping Mode[/b]</font> NASA teams have completed filling the core stage of the SLS (Space Launch System) rocket with liquid hydrogen and transitioned to topping mode. Topping ensures the tank reaches its full capacity with super-cold liquid hydrogen chilled to minus 423 degrees Fahrenheit. Engineers continue to watch the leak at the interface of the tail service mast umbilical, but the liquid hydrogen concentration in the umbilical remains within acceptable limits.</blockquote>
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