The Artemis II crew's grateful to be back on earth ... especially the mission's commander, Reid Wiseman , who was overcome with emotion while speaking Saturday. The crew just did a debrief in Houston, TX after landing near San Diego Friday ... and the commander delivered an impassioned speech to the crowd that really peeled back the curtain on space travel. Wiseman says the team couldn't wait to go up before takeoff ... but, as soon as they got into the vacuum of space, they only thought about