Educational Websites for Space Exploration
Hint - When you download Google Sky through my Space Page select the Google Pack link but then only tick the Google Earth box. The Google Pack is a very big download and I find doing them one at a time is much easier.
There are many other resources worth getting your class to have a look at on my Space Links page.
Google Sky is just one of the fantastic educational resources for exploring space I've added to the my latest Virtual Library page.