Planet X, Pluto, and NASA New Horizons

Enjoy 10% off 6” and 8.5” MOVA Globes with code THEHISTORYGUY. Shop now at Even as the IAU was officially demoting Pluto, NASA was sending the first probe intended to study it. The history of our surprisingly fond relationship with what was originally known as “Planet X” deserves to be remembered. Check out our new community for fans and supporters! This is original content based on research by The History Guy. Images in the Public Domain are carefully selected and provide illustration. As very few images of the actual event are available in the Public Domain, images of similar objects and events are used for illustration. You can purchase the bow tie worn in this episode at The Tie Bar: All events are portrayed in historical context and for educational purposes. No images or content are p