SciShow: Our Solar System Might Have TWO Hidden Planets

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: Visit https://brilliant.org/scishow/ to get started learning STEM for free. The first 200 people will get 20% off their annual premium subscription and a 30-day free trial. After Pluto's demotion to dwarf planet in 2006, our solar system went from having nine planets to eight. But about a decade later, some astronomers proposed there was another planet, larger than Earth, hiding in the Kuiper Belt. And in 2023, another team calculated there's a chance there's a gas giant orbiting the Sun in the outermost boonies of the solar system: the Oort cloud. Hosted by: Reid Reimers (he/him) ---------- 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: Adam Brainard, Alex Hackman, Ash, Bryan Cloer, charles george, Chris Mackey, Chris Peters, Christoph Schwanke, Christopher R Boucher, Dr. Melvin Sanicas, Harrison Mills, Jaap Westera, Jason A Saslow, Jeffrey Mckishen, Jeremy Mattern, Kevin Bealer, Matt Curls, Michelle Dove, Piya Shedden, Rizwan Kassim, Sam Lutfi ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: https://scishow-tangents.simplecast.com/ TikTok: https://www.tiktok.com/@scishow Twitter: http://www.twitter.com/scishow Instagram: http://instagram.com/thescishow Facebook: http://www.facebook.com/scishow #SciShow #science #education #learning #complexly ---------- Sources: https://solarsystem.nasa.gov/solar-system/kuiper-belt/in-depth/ https://solarsystem.nasa.gov/planets/hypothetical-planet-x/in-depth/ https://arxiv.org/pdf/2110.13117.pdf https://cneos.jpl.nasa.gov/glossary/au.html https://solarsystem.nasa.gov/solar-system/oort-cloud/in-depth/ https://arxiv.org/pdf/2306.11109.pdf https://arxiv.org/abs/2303.08280 https://www.nasa.gov/feature/goddard/2023/new-study-reveals-nasa-s-roman-could-find-400-rogue-earths Image Sources: https://solarsystem.nasa.gov/resources/933/true-colors-of-pluto/?category=planets/dwarf-planets_pluto https://www.gettyimages.com/detail/video/panoramic-view-of-planets-running-in-the-solar-system-stock-footage/1305308794 https://commons.wikimedia.org/wiki/File:Iwouldhavegiventhisfileamoreappropriatenameifihadknownitwasgoingintothearticle.gif https://www.gettyimages.com/detail/video/space-voyage-seamless-loop-stock-footage/483289035 https://commons.wikimedia.org/wiki/File:Kuiper_Belt%27s_ice_cores_(28090044146).jpg https://commons.wikimedia.org/wiki/File:Planet_Nine_animation.gif https://www.gettyimages.com/detail/photo/planets-of-the-solar-system-in-orbit-royalty-free-image/111834966 https://commons.wikimedia.org/wiki/File:Planet_nine_path_in_orion2.png https://exoplanets.nasa.gov/blog/1460/planet-nine/ https://commons.wikimedia.org/wiki/File:PIA17046_-_Voyager_1_Goes_Interstellar.jpg https://www.gettyimages.com/detail/video/travelling-through-asteroid-belt-stock-footage/1030865598?adppopup=true https://commons.wikimedia.org/wiki/File:Comet_Hale-Bopp_Phot-mar14-hbs-2.jpg https://commons.wikimedia.org/wiki/File:Alpha,_Beta_and_Proxima_Centauri_(1).jpg https://mobile.arc.nasa.gov/public/iexplore/missions/pages/yss/november.html https://solarsystem.nasa.gov/resources/491/oort-cloud/ https://www.gettyimages.com/search/2/film?phrase=asteroids https://www.gettyimages.com/detail/video/asteroids-in-space-stock-footage/1134611471 https://www.gettyimages.com/detail/video/earth-to-galaxy-zoom-stock-footage/473334135 https://www.gettyimages.com/detail/video/flying-through-stars-and-nebula-stock-footage/475338912 https://www.gettyimages.com/detail/video/voyager-probe-going-away-from-the-solar-system-in-the-stock-footage/1333024395 https://svs.gsfc.nasa.gov/13425 https://commons.wikimedia.org/wiki/File:Beta_Pictoris_b_orbit_animated_(2013-2018).gif https://www.gettyimages.com/detail/photo/westerbork-synthesis-radio-telescope-royalty-free-image/1433545151 https://commons.wikimedia.org/wiki/File:Planet_nine-etnos_now-new3.png https://commons.wikimedia.org/wiki/File:A_Horseshoe_Einstein_Ring_from_Hubble.JPG https://www.gettyimages.com/detail/video/the-solar-system-stock-footage/1205516525


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