http://demonstrations.wolfram.com/EarthsSecondMoon/
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
Since prehistoric times, mankind has known about the bright object in the sky that is visible even when the Sun has set: our Moon. However, in much more recent times we have discovered a second object, 3753 Cruithne (1986 TO), that orbits the Sun in alm...
Contributed by: Jeff Bryant
Suggested by: Ed Pegg Jr
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