Channel: Cool Worlds

Category: Science & Technology

Tags: exoplanetskippingcool worldsastrophysicsastronomy

Description: Have you ever wondered if there’s a Galactic Empire out there? How long would it take a space faring civilization to colonize the entire galaxy? Remarkably even traveling at sub-light speeds this should be possible within a fraction of our galaxy’s lifetime. Which raises the question - why hasn’t this happened yet? Today we dive into the repercussions of “Fact A” - the simple observation that Earth has not been colonized by an alien civilization. I sit down with Prof. Jason Wright who has recently co-authored a new paper that provides the most sophisticated treatment to date of this problem, and what it means for our place in the Universe. Interview with Prof. Jason Wright. Presented & Written by Prof. David Kipping. You can now support our research program and the Cool Worlds Lab at Columbia University: coolworldslab.com/support References: ► Carroll-Nellenback, J., Frank, A., Wright, J. & Scharf, C., 2019, "The Fermi Paradox and the Aurora Effect: Exo-civilization Settlement, Expansion, and Steady States", ApJ, 158, 117: arxiv.org/abs/1902.04450 ► Hart, M., 1975, "Explanation for the Absence of Extraterrestrials on Earth", Quart. J. RAS, 16, 128: ui.adsabs.harvard.edu/abs/1975QJRAS..16..128H/abstract Video materials and graphics used: ► Opening Galaxy shot by Bridge Head Productions: tinyurl.com/uk774j7 ► Abiogenesis animation by TheOriginOfLife youtu.be/j_flx26bU0Q ► Exoplanet animations ESO/M. Kornmesser: eso.org/public/videos/barnard-surface2b-v2-cc1 & eso.org/public/videos/eso0915e ► Galaxy zoom by Emilio Music Productions: youtu.be/AjRy6M1LJW8 ► Microbiology footage from Nokia Small World in Motion Competitions: youtu.be/lQLsyf64xak, youtube.com/watch?v=aLftNakbifg, youtu.be/ZquzlvEEZq8, youtu.be/jOur9xoK4bE ► Sunset video by kagnet: youtu.be/JoyUUokcX5g ► Cave painting from Cave Art 101, National Geographic: youtu.be/ZjejoT1gFOc ► Rocket animation Егор Румянцев: youtu.be/QESuONPI7VY ► SpaceX Mars animation by SpaceX: youtu.be/-aGISgOB6n0 ► Galactic colonization animation by ESA Advanced Concepts Team: hhttps://youtu.be/nlnlORplDTI ► Galaxy spinning animation by Huy Trường Nguyễn: youtu.be/VhowJ3OZ2BM ► Journey to Alpha Cen by ESO./L. Calçada/Nick Risinger (skysurvey.org): eso.org/public/videos/eso1241a ► Exoplanet K2-18b by ESA/Hubble/M. Kornmesser: spacetelescope.org/videos/heic1916a ► Galaxy fly-in by Batsaikhan Ariun-Erdene: vimeo.com/198713894 ► Timelapse of AKSAP telescope by Alex Cherney: youtu.be/FDoDk4D2RAw ► Closing Milky Way shot by Alexandra Angelich (NRAO/AUI/NSF): vimeo.com/205561357 Movies/TV scenes used: ► Contact (1997)/Warnes Bros. ► Alien: Covenant (2017)/20th Century Fox ► Interstellar (2014)/Paramount ► Star Trek/Paramount ► Terminator 3: Rise of the Machine (2003)/Warner Bros. ► Alien (1979)/Warner Bros. Music used, in chronological order: ► "Waking Up" by Atlas, licensed through SoundStripe.com: app.soundstripe.com/songs/3984 ► Cylinder Five (chriszabriskie.com/cylinders/) by Chris Zabriskie (chriszabriskie.com/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/by/4.0/) ► The Sun is Scheduled to Come Out Tomorrow (soundcloud.com/chriszabriskie) by Chris Zabriskie (chriszabriskie.com/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/by/4.0/) ► Cylinder Four (chriszabriskie.com/cylinders/) by Chris Zabriskie (chriszabriskie.com/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/by/4.0/) ► Music from Neptune Flux, "The Oceans Continue to Rise" by Chris Zabriskie (chriszabriskie.com/neptuneflux/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/by/4.0/) ► "Selha" by Stephen Keech, licensed through SoundStripe.com: app.soundstripe.com/songs/7102 And also... ► Columbia University Department of Astronomy: astro.columbia.edu ► Cool Worlds Lab website: coolworlds.astro.columbia.edu Latest Cool Worlds Videos ► bit.ly/NewCoolWorlds Cool Worlds Research ► bit.ly/CoolWorldsResearch Cool Worlds Long Form Videos ► bit.ly/CoolWorldsEssays Guest Videos ► bit.ly/CoolWorldsGuests Q&A Videos ► bit.ly/CoolWorldsQA Tabby's Star ► bit.ly/TabbysStar Science of TV/Film ► bit.ly/ScienceMovies SUBSCRIBE to the channel bit.ly/CoolWorldsSubscribe THANKS FOR WATCHING!! #GalacticColonization #FermiParadox #FactA