How AI describes Stellarium

Stellarium is a free, open-source planetarium software that renders a realistic 3D sky on your computer (and via Stellarium Web), showing the sky as seen with the naked eye, binoculars, or a telescope. It includes extensive star and deep-sky catalogs (hundreds of thousands to millions of objects), constellation art, nebulae, and features like realistic atmosphere, sunrise/sunset, and exoplanet locations. The project offers cross-platform desktop apps (Linux, Windows, macOS) and a web interface, with scripting, plugins, telescope control, and the ability to add custom objects, landscapes, and resources.