By -
Darren Straight
Stellarium Astronomy Software
Stellarium isa free GPL (Open Source) desktop software planetarium for Linux/Unix, Windows and MacOSX, what it does, is it renders realistic skies in real time with openGL which means the skies will look exactly like what you see with your eyes, binoculars, or a small telescope and the great thing of all is it’s easy to use even for beginners.