The Cosmic Scale

How large is the universe? Where does it begin and end? How does it expand? These are some of the biggest questions of astronomy- and while humanity is so small that we may never be able to fully understand the universe's true scale, advancements in technology are helping us to look ever-deeper into space, towards the edge of our observable universe known as the Cosmic Horizon. Today, we will get to know our universe, its laws, and its awe-inspiring scale above all. You can now support me on Patreon: https://www.patreon.com/sea_media Patrons get ad-free access to my videos, and also get early access sneak peaks! Alternatively, you can become a channel member through YouTube: https://youtube.com/seaMedia/join All support is hugely appreciated and helps me in my full-time job of creating these videos! Do you use these videos to sleep or for night time watching? Check out the new sleeping space playlist, a collection of my most chilled out and ambient videos. https://youtube.com/playlist?list=PLkoaIad9k4NIlsG6g-almaZH6MzR_T5eV Thumbnail made by Wimptastic: https://twitter.com/Wimptastical Captions by Kino Sen: https://www.youtube.com/channel/UCM-pNqfHVKFshOI2oI6-MTA MUSIC: Special thanks to Lombus, who allowed me to use his song Doppler Shores in the title screen: - Source: https://lombus.bandcamp.com/track/doppler-shores Songs by Chris Zabriskie are licensed under a Creative Commons Attribution 4.0 licence https://creativecommons.org/licenses/by/4.0/ - The Theatrical Poster...: http://chriszabriskie.com/vendaface/ - Unfoldment, Revealment... http://chriszabriskie.com/reappear/ - Cylinder Five: http://chriszabriskie.com/cylinders/ - Take Off and Shoot a Zero: http://chriszabriskie.com/stuntisland/ - Oxygen Garden: http://chriszabriskie.com/divider/ Artist: http://chriszabriskie.com/ Other songs are from the YouTube Audio Library: - Landing | Godmode - Tundras | Amulets - Dolphin-esque | Godmode - Space Chatter | Doug Maxwell - Traversing | Godmode - At The Precipice of a Dying Light | Dan Bodan FOOTAGE: The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator: http://spaceengine.org/ SpaceEngine on Steam: https://store.steampowered.com/app/314650/SpaceEngine/ Stock footage provided by Videezy.com VIDEO CLIPS: - NASA Redshift Animations: https://www.youtube.com/watch?v=wnSVBLXaoO8&t - Dark Energy Expansion: https://www.youtube.com/watch?v=7PGVJgP-YWI - Zooming into the Ultra Deep Field: https://www.youtube.com/watch?v=le3ASDvZy_s - Virtual Clips of Hubble Repair: https://www.youtube.com/watch?v=SoqD-6Z8iKQ - Final Servicing Mission: https://www.youtube.com/watch?v=LGFfq4gAwQw - Observable Universe Growing ESA: https://www.youtube.com/watch?v=F353xaKnQ2I - ESO Type 1a supernova https://www.youtube.com/watch?v=m1Wl_UtTEj0 - Redshift Expansion [Creative Commons]: https://www.youtube.com/watch?v=dLAPTNu2A_s - Expanding Universe Animation [Hubble ESA]: https://www.youtube.com/watch?v=T9lkcgu5iwM IMAGES: - Observable Universe Logarithmic Illustration: https://fb.me/observableuniverse - Hubble Images: https://www.nasa.gov/mission_pages/hubble/main/index.html - Observable Universe Graphic: By Andrew Z. Colvin - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=13251597 - Accelerated Expansion Diagram: By Design Alex Mittelmann, Coldcreation, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=31985853 - Ursa Major: https://thenounproject.com/term/ursa-major/1126831/ SOURCES OF INFORMATION: - Number of Stars in the Universe: https://www.esa.int/Science_Exploration/Space_Science/Herschel/How_many_stars_are_there_in_the_Universe - Einstein and Achievements: https://interestingengineering.com/7-of-albert-einsteins-inventions-that-changed-the-world - Edwin Hubble's 1929 Discovery: https://www.pnas.org/content/112/11/3173 - The Hubble Deep Field Images: https://esahubble.org/science/deep_fields/ - How Much of the Unobservable Universe will we See Someday: https://www.forbes.com/sites/startswithabang/2019/03/05/how-much-of-the-unobservable-universe-will-we-someday-be-able-to-see/?sh=7b6bac43f827 - Some interesting notes on the sphere expanding model: https://math.ucr.edu/home/baez/physics/Relativity/GR/centre.html - Type 1a Supernovae: https://www.nationalgeographic.com/science/phenomena/2014/08/28/type-1a-supernovas-cosmic-candle-mystery/ - Frieman et al., Dark Energy & the Accelerating Universe: https://arxiv.org/pdf/0803.0982.pdf - Size of the Unobservable Universe [Oxford Physicists]: https://arxiv.org/abs/1101.5476 TIMESTAMPS: 0:00 Introduction 2:23 Defining the Universe 6:51 The Big Bang 9:12 The Observable Universe 10:53 The Hubble Telescope 11:46 The Hubble Deep Field 16:49 Cosmic Expansion 19:40 Redshift 21:48 The Cosmic Horizon and the Unobservable Universe 25:36 Accelerating Expansion 28:29 Dark Energy 30:14 The End of the Universe Business Enquiries: [email protected]