I have been playing with and enjoying Google Earth’s Sky option (although I have had some odd configuration errors), but I have also been looking at some interesting adaptations of Google Maps.
Just click the links. Seeing it will do more than explaining, plus I am tired and lazy tonight.
In a related note, the Internet Archive has made a deal to host an archive of NASA images at Nasaimages.org. Right now it is just a NetSol holding page which doesn’t show up in the Internet Archive even though it was registered in 2005. Additionally, the email address of the Internet Archive is apparently firstname.lastname@example.org.