My eight year old would-be geologer liked this,lots of views of planets and their moons, and a flight to any planet you fancy. The main downside was that he didn't find it quite as easy to navigate as he would have liked. If he was a little older I don't think that would have been a problem. I had enormous fun with it - the views and wealth of information were satisfying to a complete beginner. Not sure that it would be of huge value to anyone who knew a reasonable amount of astrology already, but more than satisfied my curiosity. Given that I have found it quite hard to identify books or cd roms on astronomy that are accessible to junior school age as well as actually containing detailed information I think this is a good buy if you have curious children in that age group.