Stellarium

From openSUSE

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. Reference: Stellarium
A page with more information and 1-click YMP installers is located here: http://www.susegeek.com/general/stellarium-free-opensource-planetorium-on-your-computer/ (the latest YMP is 11.0 and Stellarium 0.9.1)