I spend 40 minutes talking about literally nothing. LINKS: Twitter: https://twitter.com/ZepherusYT Subreddit: https://www.reddit.com/r/zepherus/ Discord: https://discord.gg/86w3kd4eMs SOURCES: Books cited / recommended to learn more: The Hunt for Vulcan by Ben Levenson In Search of Planet Vulcan by Richard Baum and William Sheehan The Ascent of Gravity by Marcus Chown Le Verrier — Magnificent and Detestable Astronomer by James Lequeux Eclipses, Transits, and Comets of the Nineteenth Century by Stella Cottam and Wayne Orchiston Other non-book sources (limited selection): Transferring scientific discovery to the public: The intramercurial planet Vulcan in 1860 by Hsiang-Fu Huang When Lack of Evidence Is Evidence of Lack by Neil Pickering Einstein's perihelion formula and its generalization by Maurizio M. D'Eliseo https://mathshistory.st-andrews.ac.uk/Biographies/Laplace/ https://mathshistory.st-andrews.ac.uk/Biographies/Le_Verrier/ https://www.space.com/6941-theory-galileo-discovered-neptune.html https://www.fetedelascience.fr/qui-est-le-docteur-lescarbault https://plus.maths.org/content/changing-picture-gravity https://www.iau.org/news/pressreleases/detail/iau1303/ https://www.iau.org/public/videos/detail/iau2006closing/ https://www.space.com/2791-pluto-demoted-longer-planet-highly-controversial-definition.html https://www.nationalgeographic.com/science/article/vulcan-william-shatner-pluto-moon as well as various records from CRAS and newspaper archives. PHOTO CREDITS: Algol Visualisation: https://www.youtube.com/watch?v=d27exZfXzsc Eiffel Tower photo by Cristian Bortes, CC BY 2.0, Image of Francois Arago by Charles-Jérémie Fuhr, CC BY 2.0, (https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons) Video of 2017 Total Eclipse by Steve Sheridan, CC BY 3.0, Statue of Le Verrier photographed by Mbzt, CC BY 3.0, Sunset timelapsed by dejko611611, CC BY 3.0, Paris Observatory photographed by Stéphane Touraine, CC BY-SA 3.0, (https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons) Sunset image taken by Dibyendutwipzbiswas, CC BY 4.0, Photo of J. R. Hind provided by Wellcomeimages.org, CC BY 4.0, Images of Laplace, Pascal and Hôtel des Invalides provided by Wellcomeimages.org, CC BY 4.0, Video of 2015 Partial Eclipse by David Bucher, CC BY-SA 4.0, (https://creativecommons.org/licenses/by/4.0, via Wikimedia Commons) Blackboard texture created by benzoix - www.freepik.com Pluto Protest image by Darren Phillips / Associated Press ...what are you doing down here? Nobody reads the description! :D