Did Earth's Continents Come from Space?

Earth didn't always have the land beneath your feet, but what might have caused it to form is a bit of a mystery.

Hosted by: Savannah Geary (they/them)
----------
Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss!

Support SciShow Space by becoming a patron on Patreon: https://www.patreon.com/SciShowSpace

Or by checking out our awesome space pins and other products over at DFTBA Records: http://dftba.com/scishow
----------
Looking for SciShow elsewhere on the internet?
SciShow on TikTok: https://www.tiktok.com/@scishow
SciShow Tangents Podcast: http://www.scishowtangents.org
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Instagram: http://instagram.com/thescishow
----------
Sources
https://www.eurekalert.org/news-releases/961287 https://www.nature.com/articles/s41586-022-04956-y
https://www.eurekalert.org/news-releases/962768
https://doi.org/10.1130/G50513.1 (direct url link is very long)
https://www.eurekalert.org/news-releases/962656
https://www.britannica.com/science/dating-geochronology/Importance-of-zircon-in-uranium-lead-dating
https://www.nature.com/articles/ngeo2707
https://www.sciencedirect.com/science/article/abs/pii/S0012825220303445
https://www.sciencedirect.com/science/article/pii/S1674987115300062
https://www.sciencedirect.com/topics/earth-and-planetary-sciences/hafnium
https://link.springer.com/article/10.1007/s00410-005-0025-8
https://www.sciencedirect.com/science/article/pii/S0024493717300117
https://www.sciencedirect.com/science/article/pii/B9780124095489120147
https://pubs.geoscienceworld.org/gsa/geology/article/44/10/855/195071/The-origin-of-Earth-s-first-continents-and-the
https://www.nature.com/articles/d41586-018-01074-6
https://education.nationalgeographic.org/resource/formation-earth
https://www.smithsonianmag.com/smart-news/little-gem-oldest-piece-earth-weve-ever-found-180949869/
https://www.sciencedirect.com/science/article/abs/pii/S0012825220303445
https://www.annualreviews.org/doi/10.1146/annurev-earth-063016-020131
http://www.doiserbia.nb.rs/(A(Eqcrsz0_0gEkAAAAYzYyY2U5NjgtMWY0NC00MGIxLWJmMzEtZGI1MGVjZDhkZDMw4l7gBpjMNb9THkrOFzD_eLTuphc1))/Article.aspx?id=1450-698X1300005F#.Y0yGWC8r1qs
https://www.chemeurope.com/en/encyclopedia/Compatibility_%28geochemistry%29.html
https://theconversation.com/what-created-the-continents-new-evidence-points-to-giant-asteroids-185606
https://www.nature.com/articles/s41586-021-03337-1
https://www.britannica.com/science/craton
https://link.springer.com/referenceworkentry/10.1007/978-1-4020-4409-0_22
https://gtr.ukri.org/projects?ref=NE%2FJ019372%2F1
https://www.pnas.org/doi/full/10.1073/pnas.2105746118
https://www.sciencedirect.com/science/article/pii/S1674987119301094?via%3Dihub

Images

https://commons.wikimedia.org/wiki/File:Complex_Impact_Crater_Formation.png
https://www.gettyimages.com/detail/illustration/isotopes-of-oxygen-royalty-free-illustration/1267544675?phrase=Oxygen%20isotope&adppopup=true
https://www.gettyimages.com/detail/video/aerial-view-of-waterfall-in-geiranger-stock-footage/1173597798?phrase=ocean%20waterfall&adppopup=true
https://www.gettyimages.com/detail/photo/pangaea-or-pangea-earth-supercontinent-royalty-free-image/1317077652?phrase=pangea&adppopup=true
https://en.wikipedia.org/wiki/File:Impact_event.jpg
https://svs.gsfc.nasa.gov/2953
https://simple.wikipedia.org/wiki/Convergent_boundary
https://www.gettyimages.com/detail/video/stromboli-aerial-view-sicily-italy-stock-footage/528682118?phrase=island%20volcano&adppopup=true
https://astrobiology.nasa.gov/news/how-hot-were-the-oceans-when-life-first-evolved/
https://www.gettyimages.com/detail/illustration/convergent-plate-boundary-royalty-free-illustration/482477851?phrase=subduction&adppopup=true
https://www.gettyimages.com/detail/illustration/three-types-of-tectonic-boundaries-royalty-free-illustration/1447873159?phrase=subduction&adppopup=true
https://www.gettyimages.com/detail/video/yosemite-california-circa-2021-aerial-view-of-half-dome-stock-footage/1355563602?phrase=granite&adppopup=true
https://www.eurekalert.org/news-releases/468780
https://www.gettyimages.com/detail/video/erupting-volcano-fagradalsfjall-iceland-fpv-drone-stock-footage/1328747760?phrase=magma%20plume&adppopup=true
https://www.gettyimages.com/detail/video/cumbre-vieja-volcano-eruption-in-canary-islands-stock-footage/1344103707?phrase=volcanoes&adppopup=true
https://commons.wikimedia.org/wiki/File:Aegirine_zircon_orthoclase_MNHN_Min%C3%A9ralogie.jpg
https://www.gettyimages.com/detail/video/aerial-view-on-tea-plantation-in-sri-lanka-stock-footage/642460768?phrase=land%20scenic&adppopup=true