Stellarium

Este un program gratuit, o harta 3D a cerului care ofera informatii despre stele, constelatii, planete etc. -" 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. "

Poate fi descarcat de aici: http://www.stellarium.org/

Daca mai stiti programe de genul, dati share.

Ceva asemanator e si Celestia : http://www.shatters.net/celestia/