horseshoe orbit

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Earth has 2 moons. The Story Behind Earth’s “Other” #Moon And Its Completely Whacked Orbit. We all know and love the moon. We’re so assured that we only have one that we don’t even give it a specific name. It’s just The Moon. But the moon is not the Earth’s only natural satellite. Here’s what you need to know about #3753Cruithne and what its weird orbit reveals about the solar system. As recently as 1997, we discovered that another body, 3753 Cruithne, is a quasi-orbital satellite of Earth. This simply means that Cruithne doesn’t loop around the Earth in a nice ellipse in the same way as the moon, or indeed the artificial satellites we loft into orbit. Instead, Cruithne scuttles around the inner solar system in what’s called a “horseshoe” orbit. Horseshoe orbits are actually quite common for moons in the solar system. #Saturn has a couple of moons in this configuration, for instance. #TheyWontTeachYouThisInSchool #4biddenknowledge

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