NASA’s Artemis 1 mission concluded with Orion’s immaculate splashdown in the Pacific Ocean on Sunday. Seemingly a billion years—and most assuredly a few billion dollars—in the making, the mission ended far too quickly for space junkies like me. But in those short few weeks, it managed to nail all its primary objectives. Artemis 1 was strictly meant as a demonstration mission, a way for NASA to test its new SLS megarocket and Orion spacecraft. It’s still early days, but the mission appears to have been a big success. And because NASA achieved its major goals, we can talk about what…