Sky-Map.org (or Wikisky.org) in an interactive website that allows you to view the universe through one of the most powerful telescopes in the world. From the main page, you can click on one of the 500,000,000 cataloged objects, or choose one from the list on the right side of the page, and you are immediately transported to another world. The up-close view of celesial objects such as the Carina Nebula is accompanied by detailed scientific information. The site also contains thousands of stunning photographs, adding an artful component to the educational and scientific potential that this site holds. My personal favorite: the Butterfly Nebula (NGC 6302): http://server5.sky-map.org/starview?object_type=3&object_id=286

http://www.sky-map.org