Show Notes
Could it be that aliens are trying to communicate with us right now, but we're just not listening in the right way? They might have chosen a specific frequency, time or method of communication that we just never thought to try. In game theory, two players can co-operate towards a common goal even without communication. The idea is called a Schelling point - today we'll explore what this is and how it affects our search for life in the Universe.Written & presented by Prof David Kipping. Thanks to Prof Jason Wright for discussions on this topic!→ 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::► Alcubierre, M., 1994, "The warp drive: hyper-fast travel within general relativity", Classical and Quantum Gravity, 11 L73: https://arxiv.org/abs/gr-qc/0009013► Pfenning, M. & Ford, L., 1997, "The unphysical nature of Warp Drive", Classical and Quantum Gravity, 14, 1743: https://arxiv.org/abs/gr-qc/9702026► Finazzi, S., Liberati, S., Barceló, C., 2009, "Semiclassical instability of dynamical warp drives", Physical Review D., 79, 124017: https://arxiv.org/abs/0904.0141► McMonigal, B., Lewis, G., O'Byrne, P., 2012, "Alcubierre warp drive: On the matter of matter", Physical Review D., 85, 064024: https://arxiv.org/abs/1202.5708► Everett, A., 1996, "Warp drive and causality", Physical Review D, 53, 7365: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.53.7365► For a more rigorous breakdown of the axis flipping in Minkowski spacetime, see Chapter 3 of "Special Relativity" by Valerio Faraoni (Chapter 3 is also available here https://williamsgj.people.cofc.edu/Minkowski%20Spacetime.pdf)::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 - The Meek [https://open.spotify.com/album/0wv44MyPxj3pFQTQlyHa7j?si=zEaFsUKRTxqke2g47KDVQA&nd=1]► Joachim Heinrich - Stjärna► Chris Zabriskie - Neptune Flux 1► Hill - Evening Approaches [https://open.spotify.com/album/4pmiXcyRpPlFjWjb45pYLx?highlight=spotify:track:3mYMEDKgj4qwBkuwcXeb89]► Chris Zabriskie - Neptune Flux 4► Joachim Heinrich - Y► Indive - Trace Correction::Film/TV clips used::► The Straight Story (1999) Buena Vista Pictures Distribution► Ad Astra (2019) 20th Century Fox► Clara (2018) D Films► Contact (1997) Warnes Bros.► X-Men (2000) 20th Century Fox► Vanilla Sky (2001) Paramount Pictures► Interstellar (2014) Paramount Pictures► Star Trek: Enterprise (2001-2005) Paramount Television► Sunshine (2007) Fox Searchlight Pictures► Mankind: The Story of Us (History Channel)► Annihilation (2018) Paramount Pictures► Independence Day (1996) 20t Century Fox► Somewhere in Time (1980) Universal Pictures► The Curious Case of Benjamin Button (2008) Paramount Pictures::Chapters::00:00 Prologue01:13 Game Theory04:16 Radio Water Hole05:4 Learn more about your ad choices. Visit megaphone.fm/adchoices
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When you look the mirror, the image you see is accurate, right? Sure you left and right side get flipped, but what about your size, color and proportions? When we think about mirrors relativistically, there are a few strange (but tiny) effects which mean your appearance in the mirror is distorted. Cool Worlds explains what's going on, why it happens and how big an effect we are talking about.::More about this Video::► The following paper gives a derivation of why the law of reflection breaks down, although it not model the reaction of the mirror in response to the photon: Aleksandar Gjurchinovski, "Reflection from a moving mirror - a simple derivation using the photon model of light": https://arxiv.org/abs/1207.0998► Physics Girl, "Why do mirrors flip horizontally (but not vertically)?": https://www.youtube.com/watch?v=vBpxhfBlVLU► Vsauce, "What Color is a Mirror?": https://www.youtube.com/watch?v=-yrZpTHBEss► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu► Columbia University Department of Astronomy: http://www.astro.columbia.edu► Background music by MelodySheep "Secrets of the Stars": https://www.youtube.com/watch?v=BuxFXHircaI::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
It’s possibly the most famous question in all of science - where is everyone? Join us today for deep dive into Fermi Paradox. 🌏 Get exclusive NordVPN deal here ➵ https://NordVPN.com/coolworlds It’s risk free with Nord’s 30 day money-back guarantee!✌The Fermi Paradox has been a topic of keen debate amongst scientists, astronomers and the rest of us for more than seven decades. We can't resist the urge to speculate about aliens! But what is the paradox even really about? What explanations have been offered? Today, we explore this famous question, and offer a mind-shifting explanation.Written and 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, 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, 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, R. Lovely, M. Spoto, A. Steele, M. Varenka, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer & T. Edris.::References::► Jones, E. B. 1985, "Where Is Everybody? An Account of Fermi's Question": https://sgp.fas.org/othergov/doe/lanl/la-10311-ms.pdf► Hart, M. H. 1975, "Explanation for the Absence of Extraterrestrials on Earth", QJRAS, 16, 128: https://ui.adsabs.harvard.edu/abs/1975QJRAS..16..128H► Tipler, F. J. 1980, "Extraterrestrial intelligent beings do not exist", QJRAS, 21, 267: https://ui.adsabs.harvard.edu/abs/1980QJRAS..21..267T► Wright, J. T., Kanodia, S. & Lubar, G. 2018, "How Much SETI Has Been Done? Finding Needles in the n-Dimensional Cosmic Haystack", AJ, 156, 260: https://arxiv.org/abs/1809.07252► Gray, R. H. 2015, "The Fermi Paradox is Neither Fermi's Nor a Paradox", Astrobiology, 15, 195: https://arxiv.org/abs/1605.09187► Freitas, R. A. Jr. 1985, "There is no Fermi Paradox", Icarus, 62, 518: https://ui.adsabs.harvard.edu/abs/1985Icar...62..518F► Sandberg, A., Drexler, E., Ord, T. 2018, "Dissolving the Fermi Paradox": https://arxiv.org/abs/1806.02404::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.► Brad Hill - Echoes of Yesterday (0:00) [https://open.spotify.com/track/4AfA4TrR2WPUJ6N6Th5j8B?si=ecb4d3f6f25744cf]► Brad Hill - Circle (5:22) [https://open.spotify.com/track/5ahoF1JU8MMTgH7NIbZNvv?si=79c036a9ace4463c]► Falls - Life in Binary (9:38)► Brad Hill - The Great Alchemist (14:08) [https://open.spotify.com/album/0sfu5xfxKyQCxykRUlQATy]► Brad Hill - There Is But One Good (19:03) [https://open.spotify.com/track/1vlxAsmQaHJo1HyvYJF770]► Joachim Heinrich - Y (25:01)::Chapters::00:00 Introduction01:22 A Brief History06:13 Two Fermi Paradoxes08:16 Sponsorship09:38 The Eerie Silence11:56 Direct Fermi Paradox15:11 Capability?18:38 Motivation?20:53 Anthropicism25:01 Extragalactic SETI27:17 Outro & credits#fermiparadox #aliens #seti Learn more about your ad choices. Visit megaphone.fm/adchoices
You've probably heard about the recent news of the strange dimmings of Tabby's Star and the provoactive hypothesis of an alien megastructure (fi not check out http://bit.ly/TabbysStar). But could there be a natural explanation instead? Well two theoretical astrophycistss here at Columbia think so and here they briefly summarize some of the leading theories (although news ones are appearing almost every day!) and they think their own explanation is the best one so far.::More about this Video::► Metzger, Shen & Stone (2017), "Secular Dimming of KIC 8462852 Following its Consumption of a Planet": https://arxiv.org/abs/1612.07332► Montet & Simon (2016), "KIC 8462852 Faded Throughout the Kepler Mission": https://arxiv.org/abs/1608.01316► Schaefer (2016), "KIC 8462852 Faded at an Average Rate of 0.165+-0.013 Magnitudes Per Century From 1890 To 1989": https://arxiv.org/abs/1601.03256► Boyajian et al. (2016), "Planet Hunters X. KIC 8462852 - Where's the Flux?": https://arxiv.org/abs/1509.03622► Live Q&A on Cool Worlds with Tabby Boyajian: https://youtu.be/k_-6SEb2QlM► Cool Worlds video "What is an Alien Megastructure?" at https://youtu.be/tYHVCW3BkHU► Jason Wright's Cool Worlds video, "The Most Mysterious Star": https://youtu.be/jjh0oK7ZyfM► 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
Until recently, it was thought that travel through a wormhole, like that seen in the 2014 Christopher Nolan film Interstellar, was forbidden by the laws of physics. Prof Daniel Jafferis and his team have recently had a breakthrough and found a way to make it physically allowed. Prof Jafferis dropped by the Cool Worlds Lab to tell us about this fascinating idea.::More about this Video::► Gao, Jafferis & Wall (2016), "Traversable Wormholes via a Double Trace Deformation": https://arxiv.org/abs/1608.05687► 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
Exciting new result from the Cool Worlds Lab! Several years ago we started an ambitious research program to survey the sample of transiting cool, giant planets for exomoons. Our search is the first of its kind and provides one particularly interesting result - a new exomoon candidate, Kepler-1708 b-i. Today we discuss how we found this object and what it means.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, B. Smith, P. Masterson, R. Sievers, G. Canterbury, J. Kill, J. Cassese, J. Kruger & S. Way.::References::► Kipping, David et al. (2022), "An Exomoon Survey of 70 Cool Giant Exoplanets and the New Candidate Kepler-1708 b-i", Nature Astronomy: https://www.nature.com/articles/s41550-021-01539-1► Teachey, Alex and Kipping, David (2018), "Evidence for a large exomoon orbiting Kepler-1625b", Science Advances: https://www.science.org/doi/10.1126/sciadv.aav1784::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► Indive - Ion (0:00)► Brad Hill - Looking for the Profound (0:30) [https://open.spotify.com/album/69IrML6Y4K3Wh1pZr3L4Jb]► Chris Zabriskie - The Sun Is Scheduled To Come Out Tomorrow (06:30)► Falls - Life in Binary (9:01)► Brad Hill - Breathe (13:40) [https://open.spotify.com/album/69IrML6Y4K3Wh1pZr3L4Jb?si=5L0v6iu7RT6pYVtc6bX0ng]► Brad Hill - Fragmented (17:17) [https://open.spotify.com/album/1QDRubBTOO50Kwb8MtRwjF]► Brad Hill - There is but One Good (18:48) [https://open.spotify.com/album/4pmiXcyRpPlFjWjb45pYLx]► Brad Hill - The Mysterious (18:48) [https://open.spotify.com/album/69IrML6Y4K3Wh1pZr3L4Jb]► Indive - Trace Correction (28:39)::Film/TV clips used::► Avatar (2009) 20th Century Fox► Ad Astra (2019) 20th Century Fox► Sunshine (2007) Fox Searchlight Pictures► Avengers: Endgame (2019) Walt Disney Studios Motion Pictures► Prisoners (2013) Warner Bros. Pictures► Men in Black (1997) Sony Pictures Releasing► Agora (2009) Fox International Pictures► Prometheus (2012) 20th Century Fox► The Imitation Game (2014) The Weinstein Company► The Aviator (2004) Warner Bros. Pictures► Prospect (2018) Gunpowder & Sky::Chapters::00:00 Teaser00:25 Exomoon Hunting09:01 Cool Giants Survey17:23 KIC-790682724:05 Kepler-170828:39 Outro and credits#Exomoons #Kepler1708 #CoolWorlds Learn more about your ad choices. Visit megaphone.fm/adchoices