Microsoft WorldWide Telescope (WWT for short) is a free and open-source virtual, visualized digital planetarium project (including application, data and cloud services) for both web browser (based on HTML5 and WebGL) and Windows desktop. It was originally created by Microsoft Research in 2002, and is now managed by the American Astronomical Society, and supported by grants from the Gordon and Betty Moore Foundation and National Science Foundation.
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Universe Sandbox is a very cool software designed to simulate the physical interaction movements (you can create & destroy on an unimaginable scale) of universe stars perfectly. It has a 3D engine with very high simulation degree, and is a pretty darned good simulator (also can be regarded as a scientific game) for understanding the whole universe.
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Live under the pressure of everyday busy work, remember the last time looking at the stars? Combined with the growing air pollution, watching the stars may become a luxury thing. But it doesn’t matter, let’s take a step back and using Asynx Planetarium to look at the beautiful night sky on our PC.
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Stellarium is a free open-source desktop virtual planetarium software from France, supports Unix/Linux, Windows and Mac OS X platforms. It uses OpenGL to render the stars in real time, and generate a virtual 3D sky on your desktop, so the stars effect is almost completely the same as you observe the stars sky with only naked eye, telescope or astronomical telescope.
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