That's Why Pluto Is Not a Planet Anymore

If you were in elementary school before 2006, there's a good chance you had to memorize the order of the 9 planets in our solar system; Mercury, Venus, Earth, Mars, Jupiter, Saturn, URinus—also pronounced UrANUS, and finally Neptune, and Pluto. Now, if you're currently in elementary school, you might be saying, "Wait, there were nine planets?” Learn more about your ad choices. Visit megaphone.fm/adchoices