Neil deGrasse Tyson takes on the subject of our spherical world, and this time he has not only science but history on his side. You can learn even more at https://brilliant.org/StarTalk/. Catch up with StarTalk Radio around the web: Twitter - https://twitter.com/StarTalkRadio Facebook - http://www.facebook.com/StarTalk Instagram - http://instagram.com/startalkradio If you love StarTalk, don't miss out on any news. Sign up for our free newsletter: http://www.startalkradio.net/newsletter Note: In illustrating a total lunar eclipse we used a bit of animation that didn’t portray Earth’s umbra and penumbra accurately. To see a graphic that accurately depicts both portions of Earth's shadow in space, visit https://www.startalkradio.net/shedding-light-on-earths-shadow-in-our-recent-youtube-video/ Hosts Neil deGrasse Tyson, Chuck Nice Director Dave Wiskus Writers PJ Scott-Blankenship, Josh Silverman Animation Director Bård Edlund Animators David Powell, Josh Sherrington Sound Designer Jay Pellizzi Producers Amanda McLoughlin, Brilliant.org, Ben Ratner StarTalk Radio Executive Producers Neil deGrasse Tyson, Helen Matsos Producers Laura Berland, Jeffrey Lee Simons, Lindsey Walker *********************************** 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! #FlatEarth #neildegrassetyson #StarTalk 0:00 - Introduction 0:48 - How Physics Conspires To Make Things Round 1:31 - The History Of Flat Earth 2:05 - Evidence For The Spherical Earth 4:05 - Eratosthenes's Experiment 5:40 - How We Can Observe The Spherical Earth Ourselves 6:41 - What The Rise Of Flat Earthers Means 7:15 - Sponsored by Brilliant 8:10 - Closing Notes