Meteors: Crash Course Astronomy #23

From the creator

Today Phil helps keep you from ticking off an astronomer in your life by making sure you know the difference between a meteor, meteorite, and meteoroid. When the Earth plows through the stream emitted by a comet we get a meteor shower. Meteors burn up about 100 km above the Earth, but some survive to hit the ground. Most of these meteorites are rocky, some are metallic, and a few are a mix of the two. Very big meteorites can be a very big problem, but there are plans in the works to prevent us from going the way of the dinosaurs. Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crashcourse-astronomy-poster Meteorite Links: Aerolite Meteorites, Inc.: http://www.aerolite.org/ Big Kahuna Meteorites: http://bigkahuna-meteorites.com/ Arizona Skies Meteorites: http://www.arizonaskiesmeteorites.com/ -- Chapters: Introduction: Meteors 00:00 Shooting Stars, Meteoroids, Meteors, or Meteorites? 1:15 Kinetic Energy 1:53 Compression & Ablation 2:57 Sporadic Meteors 3:45 Meteor Showers 4:23 Bolides 6:24 Classifying Meteorites 7:12 Very Big Meteorite = Very Big Problem 8:36 Review 10:20 -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow Phil on Twitter: https://twitter.com/badastronomer Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://w

Published 2015-07-02 · Watch on YouTube ↗
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