We started today's class by talking about eclipses, since we've just had a lunar eclipse a few days ago. We discussed the difference between lunar eclipses and solar eclipses. I pulled up an image of the Space Station crossing in front of the disk of the Sun, and that triggered a torrent of salient questions from Bobby - we talked about zero-gravity environments, how does one eat and sleep in space, what is the Space Station used for, and so on. We finished class with Bobby's favorites, nebulae, and printed some out for him to tape to his wall.