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We recently announced the discovery of the first Jupiter-like planet seen to transit its star. Thanks to all of you who watched our last video (link below!). There were some great questions posted in the comments and elsewhere, so in this video the discovered, Prof Kipping, answers your questions directly!::More about this Video::► Our video announcing the discovery of Kepler-167e: https://youtu.be/ZTKVC2zBElA► Kipping et al. (2016), "A Transiting Jupiter Analog": https://arxiv.org/abs/1603.00042► Centauri Dreams blog article: http://www.centauri-dreams.org/?p=35135► Bryan et al. (2016), "Statistics of Long Period Gas Giant Planets in Known Planetary Systems": http://arxiv.org/abs/1601.07595► Outro music by Taylor Davis: https://www.youtube.com/watch?v=dl9kI1yQKZk::Playlists For Channel::Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorldsCool Worlds Research ► http://bit.ly/CoolWorldsResearchGuest Videos ► http://bit.ly/CoolWorldsGuestsQ&A Videos ► http://bit.ly/CoolWorldsQAScience of TV/Film ► http://bit.ly/ScienceMovies::Follow us::SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribeCool Worlds Lab http://coolworlds.astro.columbia.eduTwitter https://twitter.com/david_kippingInstagram https://www.instagram.com/cool.worldsTHANKS FOR WATCHING!! Learn more about your ad choices. Visit megaphone.fm/adchoices

Visit our sponsor, Brilliant.org: https://brilliant.org/CoolWorlds.Astronomers are on a quest to search for life in the Universe. Two different pathways lay ahead for this hunt, biosignatures and technosignatures. Today, we discuss the arguments for and against each and consider that intelligence could be a far more persistent phenomenon that we might naively think - with important consequences for astronomers...Written and presented by Prof David Kipping of Columbia University→ Support our research program: https://www.coolworldslab.com/support→ Get Stash here! https://teespring.com/stores/cool-worlds-storeTHANK-YOU to our supporters T. Widdowson, D. Smith, M. Sloan, L. Sanborn, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, Z. Star, T. Zanjonc, C. Wolfred, F. Rebolledo, L. Skov, E. Wilson, M. Elliott, B. Daniluk, J. Patrick-Saunders, M. Forbes, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, V. Alexandrov, L. Macchia, C. Souter, M. Gillette, T. Jeffcoat, H. Jensen, F. Linker, J. Rockett, N. Fredrickson, B. Mlazgar, D. Holland, J. Alexander, E. Hanway, J. Molnar, D. Murphree, S. Hannum, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black & R. Ramezankhani.::Music::Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], or via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/by/4.0/), or with permission from the artist► Joachim Heinrich - Stratosphere► Brad Hill - A Slowly Lifting Fog [https://open.spotify.com/track/0GgkyL3y22kFslT6wUsKlt?si=35f82c623b9f486d]► Chris - Cylinder Five► Falls - Life in Binary► Chris - Cylinder Five► Falls - Ripley► Chris - The Sun is Scheduled to Come Out Tomorrow► Joachim Heinrich - Y► Indive - Trace Correction::Video clips::► Iceland footage by Louis Houiller► Canada footage by Florian Nick/Arc'teryx► Starry timelapse by Kuba Jurkowski► Earth zoom-out by ESO/L. Calçada/M. Kornmesser► Flask burning video by Science Skool► Plankton bloom by Planet Ocean► Wildfire footage by Meese Engine and The Atlantic► Space debris animation by ESA► JWST footage by NASA's Goddard Space Flight Center► HabEx animation by NASA/JPL/Caltech► LUVOIR animation by NASA's Goddard Space Flight Center► The Thinker by Great Art Explained► Rotating planet animation by Space Telescope Science Institute’s Office of Public Outreach► Paranal timelapse ESO/S. Guisard► Oumuamua animation by ESO, M. Kornmesser, L.Calcada► Colonization animation by Jonathan Carroll-Nellenback ► Sun evolving animation by ESA/Hubble (M. Kornmesser & L. L. Christensen)► K2-18b animation by ESA/Hubble, M. Kornmesser► Earth methane animation by NASA's Scientific Visualization Studio► Greenhouse gas animation by djxatlanta► Curiosity animation by NASA Jet Propulsion Laboratory► Stomatalites by Ed Austin► Chlorophyll video by Sci- Inspi► Bacteria videos by Nikon Small World 2020► Radio animation by Saturday's World► NYC timelapse by the TV Series Metropolis► Antartica base footage by the Smithsonian Channel► Tristan de Cuna footage by Redfern Natural History Productions► Easter Island drone footage by Michael Kohen► Amazonian tribe footage by the BBC► Hunting humans reconstruction by NHK WORLD-JAPAN► Chimpanzee footage by BBC► Earth in 4k by NASA/ESA/M.Kornmesser► RCP 8.5 simulation by NASA's Scientific Visualization Studio and NASA Center for Climate Simulation► Solar farms footage by VISION► Wind farm footage by Jamie Jenkins► Pyramid footage by Explore&Share► Easter Island footage by EasterIslandWTM► Stonehenge timelapse by Stonehenge Dronescapes► Supercomputer footage by Verge Science► Dancing robots by Boston Dynamics► LUVOIR unfolding by AURA::Film/TV clips used::► Papillon (2017) Bleecker Street► Star Wars: The Last Jedi (2017) Walt Disney Studios Motion Pictures► Ad Astra (2019) 20th Century Fox► Gravity (2013) Warner Bros. Pictur Learn more about your ad choices. Visit megaphone.fm/adchoices

Use code coolworlds at https://incogni.com/coolworlds to get an exclusive 60% off an annual Incogni plan.Head to an exoplanet seminar or conference and you'll constantly hear astronomers talking about "the Cosmic Shoreline". But - what the heck is that? Why is it so important? And why is JWST dedicating a huge amount of telescope time to studying it?Written & presented by David Kipping, edited by Jorge Casas→ Support our research: https://www.coolworldslab.com/support→ Get merch: https://crowdmade.com/collections/cool-worlds→ Check out our podcast: www.youtube.com/@CoolWorldsPodcastTHANK-YOU to S. Shardool, M. Seay, M. McMillan, M. Popovski, M. Singh, M. Elliott, M. Donkin, M. Zajonc, M. Czirr, M. Williams, M. Daughaday, M. Muriuki, M. Cartmell, M. Ford, M. Devermont, M. Hedlund, M. Patterson, M. Murphy, M. Bassnett, M. Lovely, M. Schiff, M. Bylinsky, C. Fitzgerald, M. Danielson, M. Morrow, M. Corwin, M. Schreiner, M. Metts, M. Stevenson, M. Vystoropskyi, M. Brownlee, M. Shamp, M. Sattler, M. Ross-Lee, M. Bueche, M. Fitzsimmons, M. Borisoff, M. Larter, M. Cunningham, M. Williams, M. Alley, M. Adler, M. Murray, L. Deacon, M. Kruger, M. Bryant, M. Lee, P. Johnston, M. Sanford, N. Offor, M. Saint, R. Borbidge, M. Reese, M. Langley, M. Howard, M. Stewart, M. Morrison, M. Kennedy, M. Aron, M. Rockett, M. Kingston, M. Daniluk, M. Schoen, M. Lee, M. Huch, M. Chaffee, M. Simmons, M. Herman, M. Vaal, M. Canning, M. Kochkov, M. Fullwood, G. Belsak, M. Bergman, M. Armstrong, M. Bottaccini, M. Farabee, B. Gaalen, M. Haan, M. Hoffman, E. Garland, M. Everest, M. Venzor, M. Frederick, M. Peraza, W. Ruf, M. Matters, M. Smith, M. Hansen, M. Edris, M. Souter, M. Smith, M. OBrien, M. Provost & M. Nimmerjahn.REFERENCESRocky Worlds DDT website https://rockyworlds.stsci.eduMUSICLicensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (https://creativecommons.org/licenses/by/4.0/) or with permission from the artist. You can see all of our past music here: https://open.spotify.com/playlist/0Bu2UQlKDb0KaeliLZUOZn0:00 Falls - Life In Binary4:38 Scott Buckley - Dragon’s Lullabye5:57 Hill - World of Wonder7:44 Sid Acharya - Searching for Answers10:56 Atlas - Waking Up13:21 Scott Buckley - Dragon’s Lullabye15:15 Chris Zabriskie - The Sun is Scheduled to Come Out TomorrowCHAPTERS0:00 Teaser0:24 The Martian Anchor1:36 Atmospheric Loss3:42 The M-Dwarf Factor5:58 Incogni7:45 The Shoreline is Born10:43 Exoplanets Spoil the Party13:10 The Empirical Shoreline13:57 Going Ultraviolet15:05 JWST Attacks the Shoreline16:17 Final Thoughts17:20 Outro and Credits#JWST #Exoplanets #CoolWorlds Learn more about your ad choices. Visit megaphone.fm/adchoices

One of big projects here at the Cool Worlds Lan has been to try and detect reflected light off exoplanets. Tiffany Jansen has been leading this effort and here gives a 101 explainer as to how astronomers can do this and why it's so awesome!::More about this Video::► Knutson et al. (2007), "A map of the day–night contrast of the extrasolar planet HD 189733b": https://www.nature.com/nature/journal/v447/n7141/full/nature05782.html► Demory et al. (2013), "Inference of Inhomogeneous Clouds in an Exoplanet Atmosphere": https://arxiv.org/abs/1309.7894► Hu et al. (2012), "Theoretical Spectra of Terrestrial Exoplanet Surfaces": https://arxiv.org/abs/1204.1544► Kipping & Spiegel (2011), "Detection of visible light form the darkest world" https://arxiv.org/abs/1108.2297► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu► Columbia University Department of Astronomy: http://www.astro.columbia.edu► Outro music by Daft Punk "Harder, Better, Stronger, Faster": http://www.daftpunk.com and http://smarturl.it/DaftPunkiTunes::Playlists For Channel::Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorldsCool Worlds Research ► http://bit.ly/CoolWorldsResearchGuest Videos ► http://bit.ly/CoolWorldsGuestsQ&A Videos ► http://bit.ly/CoolWorldsQATabby's Star ► http://bit.ly/TabbysStarScience of TV/Film ► http://bit.ly/ScienceMovies::Follow us::SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribeCool Worlds Lab http://coolworlds.astro.columbia.eduTwitter https://twitter.com/david_kippingInstagram https://www.instagram.com/cool.worldsTHANKS FOR WATCHING!! Learn more about your ad choices. Visit megaphone.fm/adchoices

As regular watchers of the channel may remember, this summer astronomers announced the discovery of a potentially Earth-like planet orbiting our nearest star, Proxima Centauri. Sadly, research at the Cool Worlds Lab was unable to find any evidence that Proxima b transits its star, which is a blow for those hoping for near-term characterization of its atmosphere. But! Dr Jayne Birkby comes to the rescue and explains here how an alternative technique should work if we can wait a few years! Thanks to Jayne for visiting the lab and giving us all some hope for Proxima!::More about this Video::► Dr Jayne Birkby homepage: http://home.strw.leidenuniv.nl/~birkby/wordpress/► Snellen et al. (2010), "The orbital motion, absolute mass, and high-altitude winds of exoplanet HD209458b": https://arxiv.org/abs/1006.4364► Outro music by Taylor Davis: https://www.youtube.com/watch?v=dl9kI1yQKZk::Playlists For Channel::Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorldsCool Worlds Research ► http://bit.ly/CoolWorldsResearchGuest Videos ► http://bit.ly/CoolWorldsGuestsQ&A Videos ► http://bit.ly/CoolWorldsQAScience of TV/Film ► http://bit.ly/ScienceMovies::Follow us::SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribeCool Worlds Lab http://coolworlds.astro.columbia.eduTwitter https://twitter.com/david_kippingInstagram https://www.instagram.com/cool.worldsTHANKS FOR WATCHING!! Learn more about your ad choices. Visit megaphone.fm/adchoices

Visit our sponsor, MorningBrew at https://bit.ly/mbcoolworldsNew research from the Cool Worlds Lab! Join us to learn about a new technique we've developed to search for exomoons - "Transit Origami".Written and presented by Prof David Kipping of Columbia University→ Support our research program: https://www.coolworldslab.com/support→ Get Stash here! https://teespring.com/stores/cool-worlds-storeTHANK-YOU to our supporters T. Widdowson, D. Smith, M. Sloan, L. Sanborn, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, Z. Star, T. Zanjonc, C. Wolfred, F. Rebolledo, L. Skov, E. Wilson, M. Elliott, B. Daniluk, J. Patrick-Saunders, M. Forbes, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, V. Alexandrov, L. Macchia, C. Souter, M. Gillette, T. Jeffcoat, H. Jensen, F. Linker, J. Rockett, N. Fredrickson, B. Mlazgar, D. Holland, J. Alexander, E. Hanway, J. Molnar, D. Murphree, S. Hannum, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black & R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, D. Kriha, H. Kruszynski, K. Bjärkefur, A. Koczan, M. Gaal, M. Zaenger & M. Samuels.::Further Reading::► Kipping, D. (2021), "Transit Origami: A Method to Coherently Fold Exomoon Transits in Time Series Photometry", MNRAS, In Press: https://arxiv.org/abs/2108.02903► Kipping, D. (2020), "The exomoon corridor: Half of all exomoons exhibit TTV frequencies within a narrow window due to aliasing", MNRAS, 500, 1851: https://arxiv.org/abs/2012.00764::Music::Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], or via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/by/4.0/), or with permission from the artist► Brad Hill - Searching [https://open.spotify.com/album/2oDAnUfX0OYYOnuIToAEcX]► Joachim Heinrich - Stratosphere► Falls - Life in Binary► Joachim Heinrich - Cassiopeia► Joachim Heinrich - Y► Atlas - Waking Up► Outro is by Tristan Armes - Orio [https://soundcloud.com/emergentmusic/sets/tristan-armes-halo-drive-ep]::Video clips::► Starry timelapse by Kuba Jurkowski► NASA animations by footage by NASA's Goddard Space Flight Center, Space Telescope Science Institute’s Office of Public Outreach, NASA/JPL/Caltech and NASA's Scientific Visualization Studio.► ESO animations ESO, L.Calcada, M. Kornmesser::Film/TV clips used::► Avatar (2009) 20th Century Fox► Prospect (2018) DUST► Clara (2018) D Films::Chapters::00:00 A Dearth of Moons10:07 Sponsorship11:12 The Way of Origami16:31 Where From Here?17:49 Outro and credits#Exomoons # TransitOrigami #CoolWorlds Learn more about your ad choices. Visit megaphone.fm/adchoices

We listen, but we don't send. Why do we expect aliens to transmit if we don't? Many have voiced concerns about any programs designed to broadcast our presence - afterall, they may not be friendly. Although it may be a popular idea in science fiction, what do scientists say about this scenario? Today we explore the arguments for and against messaging, and what it might imply about the type of civilization that chooses to engage in messaging...Written and presented by Prof David Kipping. Special thanks to Erik Wernquist for giving us permission to use a clip from his beautiful "Wanderes" short film (https://youtu.be/YH3c1QZzRK4)→ Support our research program: https://www.coolworldslab.com/support→ Get Stash here! https://teespring.com/stores/cool-worlds-storeTHANK-YOU to our supporters D. Smith, M. Sloan, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, N. Kildal, Z. Star, E. West, T. Zajonc, C. Wolfred, L. Skov, G. Benson, A. De Vaal, M. Elliott, B. Daniluk, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, C. Souter, M. Gillette, T. Jeffcoat, J. Rockett, D. Murphree, S. Hannum, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, G. Canterbury, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, J. Alexander, C. Macdonald, M. Hedlund, P. Kaup, C. Hays, W. Evans, D. Bansal, J. Curtin, J. Sturm, RAND Corp., M. Donovan, N. Corwin, M. Mangione, K. Howard, L. Deacon, G. Metts, G. Genova, R. Provost, B. Sigurjonsson, G. Fullwood, B. Walford, J. Boyd, N. De Haan, J. Gillmer, R. Williams, E. Garland, A. Leishman & A. Phan Le.::Music::Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/by/4.0/), or with permission from the artist► Sid Acharya - Stories from the Sky (0:00)► Brad Hill - There Is But One Good (02:00) [https://open.spotify.com/album/4pmiXcyRpPlFjWjb45pYLx0]► Falls - Ripley (05:54)► Outside The Sky - Come Home (09:11)► Chris Zabriskie - Cylinder Two (13:07)► Joachim Heinrich - Y (16:18)► Chris Zabriskie - Neptune Flux 1 (17:07)► Brad Hill - Loneliness (18:30) [https://open.spotify.com/album/6vasPO2FKG0ddtkOiHmqBC?si=qWxcwquXSiaSXAeHFG6OMw]► Chris Zabriskie - Neptune Flux 10 (21:46)► Brad Hill - When It Feels Like The World Is On Your Shoulders (23:22) [https://open.spotify.com/album/6Y6yawX2LQVsr5Cizda4j9?si=aGyeEp7BSMGlMKgzrWtWvA]► Indive - Trace Correction (25:42)::Film/TV clips used::► Cosmos (PBS Television)► Cosmos: A Space Odyssey (20th Television)► Star Trek: The Next Generation (Paramount Television)► Contact (Warner Bros. Pictures)► War of the Worlds (Paramount Pictures)► Valerian and the City of a Thousand Planets (EuropaCorp Distribution)► Star Trek: Discovery (Paramount+)► Arachnophobia (Buena Vista Pictures Distribution) ► Apocalypto (Buena Vista Pictures Distribution) ► Gladiator (Dreamworks Distribution LLC) ► Star Trek (Paramount Pictures)► A River Runs Through It (Columbia Pictures)► Independence Day (20th Century Fox) ► Arrival (Paramount Pictures)► Close Encounters of the Third Kind (Columbia Pictures)► The Watcher (Netflix)► Star Wars: The Force Awakens (Walt Disney Studios Motion Pictures) ► Wile E. Coyote and the Road Runner (Looney Tunes)► Margin Call (Lionsgate)► Avengers: Infinity War (Walt Disney Studios & Motion Pictures)► Casino Royale (Sony Pictures Releasing)► Star Trek: Picard (Paramount+)► The Hangover (Warner Bros. Pictures)► Into The Wild (Paramount Vantage)► Dallas Buyers Club (Focus Features)► The Bucket List (Warner Bros. Pictures)► Johnny Cash - Hurt (American Recordings) ► Game of Thrones (HBO)► Prometheus (20th Century Fox)► The Expanse (Legendary Television Distribution)► Star T Learn more about your ad choices. Visit megaphone.fm/adchoices

::More about this Video::► Teachey & Kipping (2017), "HEK VI: On the Dearth of Galilean Analogs in Kepler and the Exomoon Candidate Kepler-1625b I": https://arxiv.org/abs/1707.08563► Alex's SciAm blog article: https://blogs.scientificamerican.com/observations/are-astronomers-on-the-verge-of-finding-an-exomoon/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciam%2Fspace+%28Topic%3A+Space%29► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu► Columbia University Department of Astronomy: http://www.astro.columbia.edu► Background music by Thomas Bergersen "Final Frontier": http://www.thomasbergersen.com ::Playlists For Channel::Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorldsCool Worlds Research ► http://bit.ly/CoolWorldsResearchGuest Videos ► http://bit.ly/CoolWorldsGuestsQ&A Videos ► http://bit.ly/CoolWorldsQATabby's Star ► http://bit.ly/TabbysStarScience of TV/Film ► http://bit.ly/ScienceMovies::Follow us::SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribeCool Worlds Lab http://coolworlds.astro.columbia.eduTwitter https://twitter.com/david_kippingInstagram https://www.instagram.com/cool.worldsTHANKS FOR WATCHING!! Learn more about your ad choices. Visit megaphone.fm/adchoices

SpaceX's Starship rocket is nearing first orbital tests. This Super Heavy launch vehicle promises to lift enormous masses into space, and do so at far cheaper costs than the competitors. What could these capabilities do for astronomy though? Join us today as we explore the potential transformative power of Starship for astronomy.Written & presented by Prof David Kipping.→ Support our research program: https://www.coolworldslab.com/support→ Get merch here! https://teespring.com/stores/cool-worlds-storeTHANK-YOU to our supporters D. Smith, M. Sloan, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, N. Kildal, Z. Star, E. West, T. Zajonc, C. Wolfred, L. Skov, G. Benson, A. De Vaal, M. Elliott, B. Daniluk, M. Forbes, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, C. Souter, M. Gillette, T. Jeffcoat, H. Jensen, J. Rockett, N. Fredrickson, D. Holland, E. Hanway, D. Murphree, S. Hannum, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, F. Van Exter, S. Roulier, B. Smith, P. Masterson, R. Sievers, G. Canterbury, J. Kill, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, T. Wheeler, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, J. Alexander, C. Macdonald, M. Hedlund, P. Kaup, C. Hays, S. Krasner, W. Evans, D. Bansal, J. Curtin, J. Sturm, RAND Corp., I. Attard, M. Donovan, N. Corwin & M. Mangione.::References::► House Science, Space, and Technology Committee video: https://science.house.gov/hearings/keeping-our-sights-on-mars-part-3-a-status-update-and-review-of-nasas-artemis-initiative► Starship Update by SpaceX: https://youtu.be/3N7L8Xhkzqo::Music::Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], or via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/by/4.0/), or with permission from the artist► Hill - There is But One Good [https://open.spotify.com/album/4pmiXcyRpPlFjWjb45pYLx]► Hill - Arc [https://open.spotify.com/album/4pmiXcyRpPlFjWjb45pYLx]► Chris Zabriskie - Cylinder 2► Falls - Life in Binary► Chris Zabriskie - The Sun is Scheduled to Come Out Tomorrow► Atlas - Waking Up::Film/TV clips used::► Interstellar (2014) Paramount Pictures::Chapters::00:00 Prologue00:48 Space Telescopes05:10 Starship Background07:38 Bigger is Better10:42 What Makes Starship Different16:32 Astronomy Benefits21:41 Risk22:46 Outro and Credits#SpaceX #Starship #CoolWorlds Learn more about your ad choices. Visit megaphone.fm/adchoices

Visit our sponsor, Brilliant.org: https://brilliant.org/CoolWorldsThe cosmos is littered with blue and red stars... but curiously no green ones. Why? Is this a fundamental constraint or merely an unlikely outcome? And what would it mean for humanity if we ever did detect a green star? Join us today as we explore this simple question with major implications.Written & presented by Prof David Kipping→ Support our research program: https://www.coolworldslab.com/support→ Get Stash here! https://teespring.com/stores/cool-worlds-storeTHANK-YOU to our supporters D. Smith, M. Sloan, L. Sanborn, C. Bottaccini, D. Daughaday,A. Jones, S. Brownlee, G. Fulton, N. Kildal, M. Lijoi, Z. Star, E. West, T. Zanjonc, C. Wolfred, F. Rebolledo, L. Skov, E. Wilson, A. de Vaal, M. Elliott, B. Daniluk, M. Forbes, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, V. Alexandrov, L. Macchia, C. Souter, M. Gillette, T. Jeffcoat, H. Jensen, F. Linker, J. Rockett, N. Fredrickson, B. Mlazgar, D. Holland, J. Alexander, E. Hanway, J. Molnar, D. Murphree, S. Hannum, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, F. van Exter, S. Roulier, M. Hammer, J. Swigo & A. Murphy.::Music::Music licensed via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/by/4.0/)► Brad Hill - Of Love and Loss [https://open.spotify.com/album/2oDAnUfX0OYYOnuIToAEcX]► Joachim Heinrich - Cassiopeia► Falls - Life in Binary► Chris Zabriskie - Cylinder Five► Falls - Ripley► Indive - Trace Correction::Film/TV clips used::► Contact (1997) - Warner Bros. Pictures► Avengers: Endgame (2019) - Walt Disney Studios Motion Pictures::Chapters::00:00 Prologue00:59 The Dearth of Green Stars05:25 Sponsorship06:28 The Blackbody Approximation10:51 Entering the Multiverse13:04 The Viridian Flash14:46 A Green Technosignature18:37 Concluding Remarks19:27 Outro and credits#NoGreenStars #Technosignatures #CoolWorlds Learn more about your ad choices. Visit megaphone.fm/adchoices