Hi James,
There certainly are a lot of video games that are set in outer space. I remember playing a Star Wars video game a long time ago (in a galaxy, far, far away) where I had to fly a spaceship though a rotating asteroid with a hole in it. Now, that was really hard!
I don't know of any video games about astronomy for your XBox, Wii, or PlayStation at home, but NASA has made a few games that you can play online for free. One of the games is called Photon Pile-up - http://spaceplace.jpl.nas...x/photon/index.shtml In this game, you use the arrow keys to gather photons of the same color to make an image from the GALEX spacecraft.
There are also some other astronomy related games here - http://spaceplace.jpl.nas.../en/kids/games.shtml
Kris