Celestia offers a 3D simulation of the galaxy and beyond. Everything is simulated in real time, meaning that what you see is actually happening right now. Time can be speeded up, slowed down or even reversed, giving you a glimpse into the past or the future. http://www.computeractive.co.uk/vnunet/downloads/2128840/celestia after installing this 10mb odd download, click on help and run DEMO first ! its AWESOME ! controls may look a little difficult at first... maybe it can be included in the next months cd's.