Arcadia Posted September 9, 2016 Share Posted September 9, 2016 (edited) http://www.pbs.org/wgbh/nova/space/black-holes-app.html "Hurl your star across spacetime, hitting targets and avoiding celestial hazards in your quest to earn a star that's big and bright enough to go supernova. As you play through the game’s 50-plus levels, you’ll meet new cosmic objects like small but dense neutron stars and massive blue supergiant stars." Edited September 9, 2016 by Arcadia in CA 1 Quote Link to comment Share on other sites More sharing options...
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