From site: Welcome to Celestia... The free space simulation that lets you explore our universe in three dimensions. Celestia runs on Windows, Linux, and Mac OS X.
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...
Celestia
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Dedicated Celestia website for use in education
Celestia designers have provided a set of visually stunning and detailed educational journeys that take students deep into space. When loaded onto a class set of computers, the activities place individual students as pilots in their own hyperdrive spacecraft with full capability to travel at their own pace to hundreds of astronomical destinations across the universe. Given Celestia's high-res graphics and its ability to play sound, these trips are a captivating way to get kids out of the classroom and out into space.
Celestia educational activities provide complete lessons and destinations in 12 different Astronomy topics. For further info, visit the dedicated educational website of Celestia at: http://gregs-educational.info




