Stellarium 0.11.0 + Portable | 43 MB + 73 MB

Stellarium is a free open source planetarium for your computer. Stellarium renders 3D photo-realistic skies in real time with OpenGL. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. Stellarium displays stars, constellations, planets, nebulas and others things like ground, landscape, atmosphere, etc. It is available for Linux/Unix, Windows and MacOSX. It is being used in planetarium projectors. Just set your coordinates and go.