Earth has a mysterious second moon - here's what we know about it
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Earth's moon isn't alone out there.
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It turns out that a second large rocky body is orbiting our world, and has been for about a hundred years now.
The object, called asteroid 2016 HO3, was first spotted by NASA this April and follows Earth in a long, wobbly orbit around the Sun, drifting ahead of and behind our planet.
Here's what else we know about it so far:

Skye Gould/Tech Insider
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NOW WATCH: Surprise: Earth has two moons
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