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The Cosmic Scale

How large is the universe? Where does it begin and end? And 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 true scale of the universe, advancements in technology are helping us to look ever-deeper into the wilds of our existence- towards the edge of our observable universe, known as the Cosmic Horizon. Today, we will analyse the universe, its laws, and its awe-inspiring scale. You can now support me on Patreon:   / 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.    • Sleeping Space Playlist   Thumbnail made by Wimptastic:   / wimptastical   Captions by Kino Sen:    / @kinosen4001   MUSIC: Special thanks to Lombus, who allowed me to use his song Doppler Shores in the title screen: - Source: https://lombus.bandcamp.com/track/dop... Songs by Chris Zabriskie are licensed under a Creative Commons Attribution 4.0 licence https://creativecommons.org/licenses/... - 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/31... Stock footage provided by Videezy.com VIDEO CLIPS: - NASA Redshift Animations:    • Unraveling the Mysteries of Dark Ener...   - Dark Energy Expansion:    • Видео   - Zooming into the Ultra Deep Field:    • Zoom into the Hubble Ultra Deep Field   - Virtual Clips of Hubble Repair:    • NASA 360 Talks - Repairing Hubble   - Final Servicing Mission:    • Final Hubble Repair Mission, HD   - Observable Universe Growing ESA:    • The Observable Universe   - ESO Type 1a supernova    • Artist’s impression of two white dwar...   - Redshift Expansion [Creative Commons]:    • The Expanding Universe and Cosmologic...   - Expanding Universe Animation [Hubble ESA]:    • The expanding Universe   IMAGES: - Observable Universe Logarithmic Illustration: https://fb.me/observableuniverse - Hubble Images: https://www.nasa.gov/mission_pages/hu... - Observable Universe Graphic: By Andrew Z. Colvin - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index... - Accelerated Expansion Diagram: By Design Alex Mittelmann, Coldcreation, CC BY-SA 3.0, https://commons.wikimedia.org/w/index... - Ursa Major: https://thenounproject.com/term/ursa-... SOURCES OF INFORMATION: - Number of Stars in the Universe: https://www.esa.int/Science_Explorati... - Einstein and Achievements: https://interestingengineering.com/7-... - Edwin Hubble's 1929 Discovery: https://www.pnas.org/content/112/11/3173 - The Hubble Deep Field Images: https://esahubble.org/science/deep_fi... - How Much of the Unobservable Universe will we See Someday: https://www.forbes.com/sites/startswi... - Some interesting notes on the sphere expanding model: https://math.ucr.edu/home/baez/physic... - Type 1a Supernovae: https://www.nationalgeographic.com/sc... - 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]