Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.
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StarCalc has been discontinued. Similar apps include Stellarium, which is free and open source. Other options are Celestia, Sky Map, KStars and Gaia Sky. There's no shortage of Star Maps like StarCalc, with more than 25 alternatives for iPhone, iPad, Windows, Android and Mac.
Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.


Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.




Sky Map (formerly the Google Sky Map) turns your Android-powered mobile phone into a window on the night sky.




Open-source astronomy software offering accurate night sky simulation with 100 million stars, Ekos astrophotography suite, stellar observation planner, "What's up Tonight" tool, FOV editor, and a variety of celestial catalogs for comprehensive astronomical exploration.




3D visualization software for ESA's (European Space Agency) Gaia mission to chart about 1 billion stars of the Milky Way Galaxy.







3D simulation of the Solar System and night sky - real time virtual orrery and observatory




Planetario contains a 3D model of our solar system. It will show the horizon and the planets in their path along the sky. The word planet comes from the Greek planetai, meaning "wanderers". Because of the rotation of the earth, the stars seem to move in perfect...




Solstix is a beautifully designed astronomy app that tracks the sun and moon with original illustrated visuals and live NASA satellite imagery.



The Starry Night apps are the most comprehensive educational astronomy apps. Use it with your introductory astronomy textbook or on its own. It's a powerful, portable planetarium that fits in your backpack. It puts thousands of stars and planets at your fingertips.




Welcome to the Atlas of Space — an interactive visualization to explore the planets, moons, asteroids, and other objects in the Solar System.

