Why does Earth’s atmosphere have layers? Neil deGrasse Tyson and Chuck Nice break down the different layers in Earth’s atmosphere (troposphere, stratosphere, mesosphere, thermosphere) and what’s going on up there. How does the stratosphere put a lid on Earth’s weather? Where does Aurora take place? “CONCORDE, a First Visit to Helsinki, May the 22nd 1985” by Kauko Helavuo (YouTube ID: VRP_jkjOTC8), via Wikimedia Commons Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) — Timestamps: 00:00 - Introduction: What’s the Temperature? 04:13 - The Troposphere 06:29 - The Stratosphere 08:32 - The Mesosphere 09:44 - The Thermosphere 12:05 - The Exosphere 13:53 - Karman Line & Where the Sky Ends Check out our second channel, @StarTalkPlus Get the NEW StarTalk book, 'To Infinity and Beyond: A Journey of Cosmic Discovery' on Amazon: Support us on Patreon: FOLLOW or SUBSCRIBE to StarTalk: Twitter: Facebook: Instagram: About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #NeildeGrasseTyson