NASA Stennis Tests RS-25 Engine No. 10001 in Eight-Minute Hot Fire

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Teams at NASA's Stennis Space Center near Bay St. Louis, Mississippi conducted a hot fire test of RS-25 engine No. 10001 on October 21, 2026. The test ran for about 500 seconds, matching the firing duration these engines use during SLS (Space Launch System) rocket launches. Engineers operated the engine at a 111% power level during the test. The article text is truncated, so further details about the test results are not available.

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