Hear stories about the alien moons orbiting our Sun, of cold stars, and the future of space exploration. Every week, scientist Dr. Carrie Nugent chats about an amazing part of our universe with an expert guest. Spacepod is the podcast that gives you an inside look into space exploration. Learn more: http://listentospacepod.com
http://www.listentospacepod.com
episode 200: 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.