Why Scientists Briefly Thought the Earth Was Hollow



Our understanding of the world has to start somewhere! And while early ideas like the Hollow Earth Theory are mostly wrong and sound silly to us now, that doesn’t mean they weren’t important.
Hosted by: Michael Aranda
SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at https://www.scishowtangents.org
----------
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
----------
Dooblydoo thanks go to the following Patreon supporters: Alex Schuerch, Alex Hackman, Andrew Finley Brenan, Sam Lutfi, D.A. Noe, الخليفي سلطان, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters
----------
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:
https://www.wired.com/2014/07/fantastically-wrong-hollow-earth/
https://books.google.com/books/about/Hollow_Earth.html?id=J1BC7eFLBFcC&printsec=frontcover&source=kp_read_button#v=onepage&q&f=false
https://www.britannica.com/biography/Athanasius-Kircher
https://cosmosmagazine.com/geoscience/what-creates-earth-s-magnetic-field
https://phys.org/news/2015-12-earth-layers.html
https://books.google.com/books?id=fAFvvG3SWgwC&pg=PT48&lpg=PT48&dq=schiehallion+experiment+hollow+earth&source=bl&ots=ROo7TJr0HW&sig=LIuZhsthbIjdrHGjKBIRjm0QG1I&hl=en&sa=X&ved=2ahUKEwic7ZTZ58XeAhVlilQKHdhiBCQ4ChDoATADegQICRAB#v=onepage&q=schiehallion%20experiment%20hollow%20earth&f=false
https://www.britannica.com/biography/Inge-Lehmann
https://www.britannica.com/biography/Edmond-Halley
https://www.britannica.com/biography/Isaac-Newton#ref363996
https://phys.org/news/2005-06-weight-world-year-old-schiehallion.html
http://sjg.lyellcollection.org/content/43/1/15
http://www.princeton.edu/~oa/manual/mapcompass2.shtml
https://www.smithsonianmag.com/smart-news/what-if-newtons-principia-mathematica-published-today-had-been-in-comic-sans-638230/
https://www.britannica.com/biography/Nevil-Maskelyne
https://www.britannica.com/topic/Core-Within-Earths-Inner-Core-The-2046720
http://sjg.lyellcollection.org/content/43/1/15
https://journals.sagepub.com/doi/abs/10.1177/002182869202300304?journalCode=jhaa
Image Sources:
https://commons.wikimedia.org/wiki/File:Schoenbartbuch_218.jpg
https://www.istockphoto.com/photo/kaymakli-underground-city-tunnel-stairs-cappadocia-turkey-gm182773500-12956554
https://www.videoblocks.com/video/alpha-channel-flames-and-fire-8-dai1vaw
https://www.istockphoto.com/photo/earths-layers-gm182678088-12380483
https://www.istockphoto.com/photo/tyrannosaurus-rex-gm182492703-12223949
https://commons.wikimedia.org/wiki/File:Edmond_Halley_072.jpg
https://commons.wikimedia.org/wiki/File:Lspn_comet_halley.jpg
https://commons.wikimedia.org/wiki/File:Prinicipia-title.png
https://www.istockphoto.com/vector/earth-with-grid-lines-europe-and-africa-gm466584103-34145102
https://www.istockphoto.com/vector/guidance-flat-icon-gm969127448-264174086
https://www.istockphoto.com/vector/vintage-sailboat-gm483390489-17408923
https://commons.wikimedia.org/wiki/File:Charles_Hutton.jpg
https://www.videoblocks.com/video/emerald-lake-ifkxenm
https://www.istockphoto.com/za/photo/planet-earth-with-some-clouds-americas-view-gm186019678-25156678
https://www.istockphoto.com/za/photo/backgrounds-photos-gm898660948-247979947
https://www.istockphoto.com/za/photo/nickel-ore-gm506615578-84308003
https://www.istockphoto.com/za/photo/the-iron-ore-on-a-white-background-gm918829382-252730626
https://commons.wikimedia.org/wiki/File:Earth_Magnetic_Field_Declination_from_1590_to_1990.gif
https://commons.wikimedia.org/wiki/File:GodfreyKneller-IsaacNewton-1689.jpg
https://commons.wikimedia.org/wiki/File:Halley_compass_variations_1702.jpg
https://www.istockphoto.com/photo/venus-gm171149710-14407038
https://www.istockphoto.com/photo/3d-rendering-planet-mars-isolated-on-black-gm949235488-259128899
https://www.istockphoto.com/photo/mercury-gm183817880-16094120
https://www.istockphoto.com/photo/planet-earth-with-some-clouds-americas-view-gm186019678-25156678


View on YouTube