A sketch of a circumlunar free return trajectory (not to scale). Created by myself based on NASA's Apollo mission profiles (<a rel="nofollow" class="external free" href="http://www.hq.nasa.gov/alsj/a410/A08_MissionReport.pdf">http://www.hq.nasa.gov/alsj/a410/A08_MissionReport.pdf</a>).
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2014-01-03 22:26:08
<span class="int-own-work" lang="en">Own work</span>