Cruithne, the Asteroid With a Horseshoe Orbit

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There’s a small asteroid that appears to orbit Earth in a horseshoe shape. Sometimes referred to as Earth’s second moon, but it's orbit is much weirder than that.

Host: Reid Reimers

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Sources:
https://www.nature.com/articles/42662
http://theconversation.com/earths-oth...
https://www.businessinsider.com.au/cr...
https://futurism.com/a-day-on-cruithn...
https://earthsky.org/space/does-earth...
http://www.astro.uwo.ca/~wiegert/3753...
https://physicsworld.com/a/earths-sec...
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Images:
https://svs.gsfc.nasa.gov/11935
https://en.wikipedia.org/wiki/File:Ho...
https://en.wikipedia.org/wiki/File:Or...
https://www.spacetelescope.org/videos...
https://en.wikipedia.org/wiki/File:Cr...
https://commons.wikimedia.org/wiki/Fi...
https://en.wikipedia.org/wiki/File:An...
https://www.eso.org/public/videos/eso...
https://www.istockphoto.com/vector/cu...