Stellarium

Stellarium is a marvelous application which will be enjoyed by both those who like astronomy and those who doesn't known anything about stars. It combines a powerful database and a photo-realistic visual engine. Stellarium is a complete virtual planetarium with more than 120.000 stars, planets, constellations,...and incorporates a navigation system fully customizable. With only 10 MB, you will have all the sky in your computer and a different way to look at the stars on your screen.