This is a really cool new program by Microsoft that allows you to view the entire universe, for the most part, via a 3d viewport. I am amazed by this program. It's still in beta but Microsoft basically used the worlds largest database of space images and tied all the images together. It's really worth checking out if you're really into astronomy. I love it, you can even see pictures of Mars from the Rovers. What makes this way cool is that there are tons of options and you can also view different planets!!! Check the link for Microsoft's website.
http://www.worldwidetelescope.org/
