Stellarium is a planetarium for your computer that provides an experience of observing the sky as if you were seeing it with the naked eye, with binoculars or a telescope.
The standard catalog contains over 600,000 stars, adding extra catalogs the number of stars exceeds 177 million.
With just the standard catalog more than 80,000 deep sky objects are available, with extra catalogs the number of objects exceeds 1 million.
The planetarium also has asterisms and illustrations of constellations, images of nebulae, realistic milky way, realistic sunrises and sunsets and more.