http://www.worldwidetelescope.org/Home.aspx
Microsoft's answer to Google Earth: WorldWide Telescope. I had this installed last year on my second laptop but I didn't keep up with it after my laptop woes (second got destroyed, third one was hardware-faulty, now I'm on my fourth), but now that I installed the latest WorldWide Telescope, I'm amazed by how updated it got.
If anyone is interested in learning more about outerspace, try this software (and it's free
).








