UPDATE: I finished this wonderful course. Where do I sign up for the sophomore, junior and senior courses? I loved every minute. Thanks to all who created this app. (Original post:) I didn't have the opportunity to study astronomy in high school or college, and I've always loved planetariums, but we rarely get the chance to go to one. I've always wanted to know more about the night sky, and to have a better understanding of all those wonderful things up there. I'm doing one or more exercises every evening and learning a great deal. I'm repeating some of the exercises if I don't understand them completely. The animations are wonderful. The software is very thorough, so much so that I suspect there are features I'll never use. I'm getting a great deal of enjoyment out of this. My husband thinks this is hilarious, because we are in our 70s. Every night when he turns on the television, I say, "I'm going to learn more astronomy." It's much easier to learn with the visuals and animations, at least for me, then it would be by reading a book; however, I intend to get an astronomy textbook from the library when I'm done with the exercises, and use this app to learn even more.