This space simulation software lets users explore the universe in three dimensions. Targeted for middle and high school learners and students in introductory college astronomy courses, Celestia allows users to move throughout the solar system to more than 100,000 stars, or even beyond the galaxy. Controls enable users to orbit stars, planets, moons, and other space objects; track space objects such as spacecraft, asteroids, and comets; and pass through nebulae and irregular, elliptical, and spiral galaxies.The program runs on Windows, Mac OS X, and Linux platforms. See the website to learn more and download Celestia; click on Related Sites for ideas for using it in the classroom.
Full Link: https://celestiaproject.net/