NASA leaders argued that it makes more sense to uncover problems and practice operations close to home, in Earth orbit, rather than discovering them for the first time while attempting a landing on the moon. If the faster launch tempo holds, Artemis IV and Artemis V together could give NASA two opportunities in 2028. Officials stressed that the timeline still depends on hardware readiness and safety reviews.
entry.target.dispatchEvent( new CustomEvent( 'resized' ));
，这一点在新收录的资料中也有详细论述
They never did. The flag disappeared eventually, though I received no confirmation.
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