NASA’s moonbound astronauts have reason to celebrate, and not just because their launch went so well. Their toilet is now working. The so-called lunar loo malfunctioned as soon as they reached orbit Wednesday evening. Mission Control guided astronaut Christina Koch through some plumbing tricks and she finally got it going. The bad news is that it’s so cold inside the Orion capsule that the four astronauts are digging into suitcases for long-sleeved clothes. The three Americans and one Canadian are on track to bust out of orbit around Earth on Thursday night and zoom to the moon for a fly-around.