Nine years on, Neil deGrasse Tyson is still synonymous with Pluto's demise as a planet.
After the legendary astrophysicist decided to omit Pluto from the solar system displays at the Hayden Planetarium in New York, he began receiving hate mail from around the world.
As it turned out, most of Pluto's biggest fans were still in kindergarten!
Reprinted from The Pluto Files: The Rise and Fall of America’s Favorite Planet by Neil deGrasse Tyson. Copyright © 2009 by Neil deGrasse Tyson.