SciShow Space: How Jupiter's Moons Showed Us the Speed of Light

Teacher or professor: SciShow Space
Subject: Astronomy, Astronautics, Astrophysics
Content of the Lesson: Light travels through space as fast as anything in the universe possibly can, but before scientists could figure out light’s speed, they had to figure out whether that speed was even finite. SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org Host: Reid Reimers ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Kevin Bealer, KatieMarie Magnone, D.A. Noe, Charles Southerland, Eric Jensen, Christopher R Boucher, Alex Hackman, Matt Curls, Adam Brainard, Scott Satovsky Jr, Sam Buck, Avi Yashchin, Ron Kakar, Chris Peters, Kevin Carpentier, Patrick D. Ashmore, Piya Shedden, Sam Lutfi, charles george, Greg ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://galileoandeinstein.physics.virginia.edu/lectures/spedlite.html http://mathshistory.st-andrews.ac.uk/Biographies/Empedocles.html https://interestingengineering.com/a-brief-history-of-the-speed-of-light https://oll.libertyfund.org/titles/galilei-dialogues-concerning-two-new-sciences https://www.pbs.org/wgbh/nova/article/brief-history-speed-light/ https://www-spof.gsfc.nasa.gov/stargaze/Sun4Adop1.htm https://www.amnh.org/learn-teach/curriculum-collections/cosmic-horizons-book/ole-Rømer-speed-of-light https://www.nbi.ku.dk/english/www/Rømer/Rømer/lysets_toeven/ https://web.pa.msu.edu/people/horvatin/Astronomy_Facts/planet_pages/Jupiters_moons.htm ---------- Images: https://commons.wikimedia.org/wiki/File:Aristotle_Altemps_Inv8575.jpg https://commons.wikimedia.org/wiki/File:Ole_R%C3%B8mer_(Coning_painting).jpg https://www.spacetelescope.org/images/opo9630a/ https://commons.wikimedia.org/wiki/File:Christiaan_Huygens-painting.jpeg https://commons.wikimedia.org/wiki/File:Frodsham_chronometer_mechanism.jpg


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