Intertemporal Communication

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There's a plausible chance that we may be alone in the galaxy right now. But the odds that the galaxy has never, and will never, host other civilizations is far less likely. Today we explore the possibility of communicating through time, and how such a feat might be accomplished.

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Thank-you to Kevin Clark, Tom Widdowson, Denny Smith, Stephanie Hackley, Kolos Kantor, Patrick Herman, Abel Aganbegyan, Claudio Bottaccini, Daniel Brunk, Scott Fincher & James Kindred for their support and especially to Executive Producers Mark Sloan, Laura Sanborn & Douglas Daughaday.

References: ► Freitas & Valdes (1999), "The Search for Extraterrestrial Artifacts (SETA)", JBIS, 36, 501: https://ui.adsabs.harvard.edu/abs/1983JBIS...36..501F/abstract ► Luc Arnold (2005), "Transit Lightcurve Signatures of Artificial Objects", ApJ, 627, 534: https://arxiv.org/abs/astro-ph/0503580 ► Jeanna Bryner (2010), "Odds of Life on Newfound Earth-Size Planet '100 Percent,' Astronomer Says", Space.com: https://www.space.com/9225-odds-life-newfound-earth-size-planet-100-percent-astronomer.html ► David Kipping (2020), "An Objective Bayesian Analysis of Life's Early Start and Our Late Arrival", PNAS, 117, 11995: https://arxiv.org/abs/2005.09008 ► Denis Chow (2011), "On the Moon, Flags & Footprints of Apollo Astronauts Won't Last Forever", space.com: https://www.space.com/12846-apollo-moon-landing-sites-flags-footprints.html

::Video clips used:: ► Intro clip are images from NASA's EPIC DSCOVR mission, interpolated by BlueTurn: https://youtu.be/Mm8L6Hm6c-g ► Stars time lapse by Ben Vegel: https://youtu.be/Wl2sDEpjqQI ► Radio teleascope timelapse by Alex Cherney and CSIRO: https://youtu.be/1hawK5JwVfY ► NASA/JPL-Caltech/T. Pyle (SSC-Caltech) http://www.spitzer.caltech.edu/video-audio/728?limit=20&page=1 ► Galaxy fly through animation by AA VFX: https://youtu.be/SdMqV4h9kVg ► Veritas timelapse by Daniel Gall: https://youtu.be/w1tI1MYTo2k ► Milky Way animation by Stefan Payne-Wardenaar: https://vimeo.com/330625918 ► Spinning galaxy animation by Huy Trường Nguyễn: https://youtu.be/VhowJ3OZ2BM ► Flying through stars by Wilson Blindado: https://youtu.be/lhSJGlgR0UI ► Exoplanet animation by ESO/M. Kornmesser: https://www.eso.org/public/videos/eso1134b/ ► New York timekapse by Urban VFX: https://youtu.be/-VqQ9wC2S7Y ► Earth in 4k by NASA/ESA/M.Kornmesser: https://www.eso.org/public/videos/earth_2015_4k/ ► Sand dunes blowing by HD Footage: https://youtu.be/y_xDLMVQmmE ► Pyramids from AirPano VR: https://youtu.be/UuGWdt0K3Ic ► Easter Island footage by Michael Kohen: https://youtu.be/acbdh8P8DOY ► Stonehenge timelapse by Love Great Britain: https://youtu.be/1d8L94ANeBg ► Museum tour by ProWalk Tours: https://www.youtube.com/watch?v=EdCReWs6-wI ► Voyager animations by NASA JPL Caltech: https://www.jpl.nasa.gov/video/details.php?id=1248 ► Galaxy colonization animation by Jonathan Carroll-Nellenback ► Outro animation by ESA/Hubble and M. Kornmesser: https://www.spacetelescope.org/videos/hubblecast70b/ ► Intro/Outro voice over by Carl Sagan "Pale Blue Dot"

::Movies/TV scenes used:: ► Contact (1997) Warner Bros. ► Ad Astra (2019) 20th Century Fox ► Valerian and the City of a Thousand Planets (2017) EuropaCorp Distribution ► Papillon (1973) Allied Artists ► The Assassination of Jesse James by the Coward Robert Ford (2007) Warner Bros. ► Into The Wild (2007) Paramount Vantage ► Interstellar (2014) Paramount Pictures ► The Time Machine (2002) DreamWorks Pictures

::Music:: All music used is licensed by SoundStripe.com (SS) [shorturl.at/ptBHI] or via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/by/4.0/) ► "Fable" by Stephen Keech licensed via SS ► "My Unbelief" by Hill licensed via SS ► "Cylinder Five" by Chris Zabriskie licensed under a CC Attribution license: http://chriszabriskie.com/cylinders/ ► "Painted Deserts" by Shimmer licensed via SS ► "Always Dreaming" by Caleb Etheridge via SS ► "Waking Up" by Atlas licensed via SS ► "Cylinder Two" by Chris Zabriskie licensed under a CC Attribution license: http://chriszabriskie.com/cylinders/ ► "We Were Never Meant to Live Here" by Chris Zabriskie licensed under a CC Attribution license: http://chriszabriskie.com/neptuneflux/ ► "Horizon" by Joachim Heinrich licensed under a CC Attribution license: https://joachimheinrich.bandcamp.com/track/horizon

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