NASA calls off Artemis 1 moon rocket launch over engine cooling issue

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CAPE CANAVERAL, Fla. — An engine cooling issue on NASA’s giant new rocket for deep-space exploration forced the agency to call off the booster’s much-anticipated launch debut early Monday (Aug. 29).

NASA had mostly fueled its first Space Launch System (SLS) megarocket to launch the Artemis 1 moon mission on Monday when launch controllers were unable to chill one of the four main engines to the temperatures needed to handle its super-cold propellant. The issue stalled plans to launch the SLS rocket and its uncrewed Orion spacecraft on an ambitious 42-day test flight around the moon. Liftoff was scheduled for 8:33 a.m. EDT (1233 GMT).



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