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Celestia is a free real-time
space simulation that lets you experience our universe in three dimensions.
Unlike most planetarium software, Celestia doesn't confine you to the
surface of the Earth. You can travel throughout the solar system, to any
of over 100,000 stars, or even beyond the galaxy. All travel in Celestia
is seamless; the exponential zoom feature lets you explore space across
a huge range of scales, from galaxy clusters down to spacecraft only a
few meters across. A 'point-and-goto' interface makes it simple to navigate
through the universe to the object you want to visit. You may also
download the Tycho star catalog. |
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