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Why there are actually more than 8 planets

For generations, the number of planets in our solar system has changed as astronomers discovered new worlds and changed what ...
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Is There Actually A Ninth Planet In Our Solar System? Here's What We Know

Add Yahoo as a preferred source to see more of our stories on Google. Digital art of distant planet - Dottedhippo/Getty Images On August 24, 2006, our solar system lost a planet. It wasn't by ...