Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors. Just set your coordinates and go.

Changelog:
The Stellarium team is proud to announce the release of version 0.9.1. This is primarily a bug fix and stabilization release. Apart from bug fixes, users can expect to see improved start-up times and a new sky culture (Tupi-Guarani) as well as some progress with translations and overall stability.

Program Information Category: Tools and Utilities Type: Free Version: 0.9.1 Size: 36.9MB Works on: Windows Product page: here