Search the sky like you would with your eyes, binoculars, or a telescope!
It’s ridiculously dynamic, you can see the constellations, the constellation’s art, different star cultures, you can see the major satellites around the Earth, nebulas, and more!
It starts with a “basic” set of stars to view, but going in to the configuration menu (by pressing F2), under the Tools tab you can download new catalogs and new stars to look at.
This is literally the best thing I’ve ever downloaded :D I recommend this to everybody. Go get it. Right now.
There’s an Einstein Cross out there somewhere, I just hope it’s in this software and I can find it :d
Other good programs include Celestia, and Space Engine. Both are available on their respective websites, or on SourceForge.