200: Pluto is a planet, and so is its moon with Dr. Runyon
- Author
- Carrie Nugent
- Published
- Sun 21 Aug 2022
- Episode Link
- https://spacepod.libsyn.com/200-pluto-is-a-planet-and-so-is-its-moon-with-dr-runyon
Dr. Kirby Runyon shares his definition of "planet"-- a round celestial body that was never a star. Using this definition, there are over 150 planets orbiting our sun. He explains why the word planet matters, and why little planets might be the most common planets in our universe.
