Looks neat.
http://www.worldwidetelescope.org/
What happened to Silverlight?????
As soon as you hit the main page, you are confronted (yes, I did say "confronted", or should I say "bullied") with this message:
This content requires the Adobe Flash Player and a browser with JavaScript enabled.
...if, of course, you don't have Flash installed. I don't. It's interesting really. I just recently replaced my old laptop on April 18th, and I am JUST NOW needing Adobe's Flash Player.
I would really, really love to not have to install an Adobe product on my computer ever again -- but, this time it's Microsoft that's making me do it. Shame, shame.
I have to say, though -- this is an amazing piece of technology. Microsoft Research has earned their keep.