Why Do We Still Use 'Knots'?

What is a knot? Neil deGrasse Tyson and comedian Chuck Nice break down how we measure nautical speed. Learn about latitude and longitude and whether aliens know about the prime meridian. How has ocean navigation changed since the age of the pirates? Timestamps: 00:00 - Introduction: Knots 00:38 - Latitude & Longitude 03:15 - Dividing Longitude Into Arcminutes 07:34 - Airspeed & GPS 8:14 - Closing: What is a Knot? Check out our second channel, @StarTalkPlus Get the NEW StarTalk book, 'To Infinity and Beyond: A Journey of Cosmic Discovery' on Amazon: https://amzn.to/3PL0NFn Support us on Patreon:   / startalkradio   FOLLOW or SUBSCRIBE to StarTalk: Twitter:   / startalkradio   Facebook:   / startalk   Instagram:   / startalk   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