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?” So, what happened to Pluto? It’s not like it’s gone anywhere. It’s still out there on the edge of the solar system, as cold and far away as ever, so what changed? Other videos you might like: What If Just One Planet Disappeared from the Solar System 9 Earth-Like Planets We Can Move On Right Now 10 Facts About Our Planet You Didn't Learn In School TIMESTAMPS: What happened to Pluto? 0:46 What does the word planet mean? 1:26 How large is Pluto? 3:12 If it has a satellite, is it a planet? 4:03 The discovery of Eris 4:59 What does it take to be a planet now? 5:31 Scientists who believ