This week, Charlie and Kirby are determined to uncover the differences between these space rocks. So, they'll go meteorite hunting in Arizona and get an up-close look at some rocky visitors from outer space. Along the way they'll learn the basics of our solar system and explore a massive crater that's millions of years old!

Originally released by National Geographic, 2017. Streaming video file encoded with permission for digital streaming by Infobase on January 05, 2023.