Stuff You Missed in History Class


Society & Culture, History

Chart Positions

Society & Culture 7
Top 200 26
History 3

Join Holly and Tracy as they bring you the greatest and strangest Stuff You Missed In History Class in this podcast by HowStuffWorks.com.

Pluto: The Demoted Dwarf Planet

July 22nd, 2013

Episode 569 of 935 episodes

It was the only planet to have been discovered by an American, but it's no longer classified as a planet. Who found Pluto, and how did astronomers even know to look for the so-called Planet X on the edge of our solar system?