How Many Planets Are There?

Poor Pluto. It was totally unknown, then it was a planet, and now it’s not a planet anymore. This change in the status of planets isn’t the first time such a thing has happened. Since the dawn of history, the number of things we call a planet has gone up and down. Find out why Pluto got demoted from a planet, and learn about our human history with planets on this episode of Everything Everywhere Daily. Learn more about your ad choices. Visit megaphone.fm/adchoices