Earth’s other ‘moon’ and its crazy orbit could reveal mysteries of the solar system
Friday, March 13th, 2015Earth’s other moon [#Cruithne] & its crazy [horseshoe] orbit [explained in a great #movie] could reveal mysteries
http://theconversation.com/earths-other-moon-and-its-crazy-orbit-could-reveal-mysteries-of-the-solar-system-38010