Aug 22, 2015 - Explore April Barefoot's board "Moon Orbit", followed by 261 people on Pinterest. See more ideas about teaching science, homeschool science, ... ... <看更多>

Earth-Moon orbit simulator. GitHub Gist: instantly share code, notes, and snippets. ... <看更多>

Assuming you did what I recommended in https://stackoverflow.com/a/16594168/252687, all you have to do is to replicate the code once more ... ... <看更多>