Cool Worlds
Why I Don’t Buy The Dark Forest Hypothesis
updated
Many of you wanted me to talk about the different interstellar propulsion ideas out there so we figured a fun way to compare them all would be in a tier list! Today we take a look at 14 different methods proposed to explore the stars. Let us know your rankings down below in the comments.
Written & presented by Prof. David Kipping. Edited by Jorge Casas.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to T. Widdowson, D. Smith, L. Sanborn, C. Bottaccini, D. Daughaday, S. Brownlee, E. West, T. Zajonc, 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, M. Sanford, T. Donkin, A. Schoen, K. Dabrowski, R. Ramezankhani, J. Armstrong, S. Marks, B. Smith, J. Kruger, S. Applegate, E. Zahnle, N. Gebben, J. Bergman, C. Macdonald, M. Hedlund, P. Kaup, W. Evans, N. Corwin, K. Howard, L. Deacon, G. Metts, R. Provost, G. Fullwood, N. De Haan, R. Williams, E. Garland, R. Lovely, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, S. Thayer, T. Edris, F. Blood, M. O'Brien, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, B. Reese, O. Shabtay, X. Yao, S. Saverys, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, B. Devermont, Y. Muheim, A. Stark, C. Caminero, P. Borisoff, A. Donovan, H. Schiff, J. Cos, J. Oliver, B. Kite, C. Hansen, J. Shamp, & R. Chaffee.
REFERENCES
► Kipping, D., 2024, "The Halo Drive: Fuel-Free Relativistic Propulsion of Large Masses via Recycled Boomerang Photons", JBIS: arxiv.org/abs/1903.03423
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00 Tamuz Dekel - Quiet Pull
2:55 Joachim Heinrich - Horizon
4:17 Joachim Heinrich - Stjärna
6:40 Hill - World of Wonder
7:46 Chris Zabriskie - The Oceans Continue to Rise
8:17 We Dream of Eden - Discovery
9:48 Chris Zabriskie - The Oceans Continue to Rise
11:11 Hill - Arctic Warmth
13:50 Hill - Northern Boards
17:25 Hill - Fragile
21:02 Hill - The Meek
CHAPTERS
0:00 Intro
1:33 Chemical Rockets
3:31 Nuclear Thermal Rockets
5:55 Nuclear Pulse
8:20 Incogni
9:48 Solar Sails
12:15 Fission Sails
13:05 Laser Sails
14:47 Alcubierre Drive
15:24 Wormholes
16:09 Antimatter
17:28 Mind Upload
18:02 Negative Mass
18:42 Halo Drive
19:46 Ion Engine
20:32 Bussard Ramjet
21:03 Outro
22:51 Credits
#InterstellarPropulsion #TierList #CoolWorlds
There are many possible solutions to the Fermi Paradox but a few have risen to particular prominence - including the "Grabby Aliens" hypothesis. Today, we'll explore what this solution proposes, what it assumes, and ultimately three reasons why I personally don't think it's right.
Written & presented by Prof. David Kipping. Edited by Jorge Casas. Special thanks to Robin Hanson for his discussions with me on this.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to T. Widdowson, D. Smith, L. Sanborn, C. Bottaccini, D. Daughaday, S. Brownlee, E. West, T. Zajonc, 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, M. Sanford, T. Donkin, A. Schoen, K. Dabrowski, R. Ramezankhani, J. Armstrong, S. Marks, B. Smith, J. Kruger, S. Applegate, E. Zahnle, N. Gebben, J. Bergman, C. Macdonald, M. Hedlund, P. Kaup, W. Evans, N. Corwin, K. Howard, L. Deacon, G. Metts, R. Provost, G. Fullwood, N. De Haan, R. Williams, E. Garland, R. Lovely, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, S. Thayer, T. Edris, F. Blood, M. O'Brien, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, B. Reese, O. Shabtay, X. Yao, S. Saverys, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, B. Devermont, Y. Muheim, A. Stark, C. Caminero, P. Borisoff, A. Donovan & H. Schiff.
REFERENCES
► Hanson, R. et al. 2021, "If Loud Aliens Explain Human Earliness, Quiet Aliens Are Also Rare", ApJ, 922, 182: arxiv.org/abs/2102.01522
► Carter, B. 2008, "Five or six step scenario for evolution?", Int. J. Astrobiology, 7, 103516: arxiv.org/abs/0711.1985
► Kipping, D. 2021, "The Red Sky Paradox", PNAS, 118, e2026808118: arxiv.org/abs/2106.11207
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00 - Tamuz Dekel - Quiet Pull
2:55 - Joachim Heinrich - Horizon
4:13 - Joachim Heinrich - Stjärna
6:41 - Hill - World of Wonder
7:43 - Chris Zabriskie - The Oceans Continue to Rise
9:33 - Hill - Arctic Warmth
12:21 - Hill - Northern Boards
15:39 - Hill - Fragile
19:10 - Hill - The Meek
CHAPTERS
0:00 Grabby Aliens
6:43 StoryBlocks
7:47 Hard Steps
12:00 M-Dwarfs
15:30 Philosophical Issues
18:05 Conclusions
19:10 Outro and Credits
#GrabbyAliens #FermiParadox #CoolWorlds
The idea of Dyson Spheres was a radical proposal by the physicist Freeman Dyson, an enormous shell of material enveloping a star. Dyson's idea may be over half a century old, but interest in looking for such objects has only grown in the decades since. But how would such structures work? Are they physically even possible? And what might someone use them for? Today, we dive into the physics of Dyson spheres.
Written & presented by Prof. David Kipping. Edited by Jorge Casas. Special thanks to Jason Wright for fact checking.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to T. Widdowson, D. Smith, L. Sanborn, C. Bottaccini, D. Daughaday, S. Brownlee, E. West, T. Zajonc, 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, M. Sanford, T. Donkin, A. Schoen, K. Dabrowski, R. Ramezankhani, J. Armstrong, S. Marks, B. Smith, J. Kruger, S. Applegate, E. Zahnle, N. Gebben, J. Bergman, C. Macdonald, M. Hedlund, P. Kaup, W. Evans, N. Corwin, K. Howard, L. Deacon, G. Metts, R. Provost, G. Fullwood, N. De Haan, R. Williams, E. Garland, R. Lovely, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, S. Thayer, T. Edris, F. Blood, M. O'Brien, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, B. Reese, O. Shabtay, X. Yao, S. Saverys, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, B. Devermont, Y. Muheim, A. Stark, C. Caminero, P. Borisoff, A. Donovan & H. Schiff.
REFERENCES
► Wright, J. 2020, "Dyson Spheres", Serbian Astronomical Journal, 200, 1: arxiv.org/abs/2006.16734
► Dyson, F. 1960, "Search for Artificial Stellar Sources of Infrared Radiation", Science, 131, 1667: https://ui.adsabs.harvard.edu/abs/1960Sci...131.1667D
► Dyson, F. 1960, Science, 132, 250
► NASA IRB JWST Report 2018: nasa.gov/wp-content/uploads/2015/01/webb_irb_report_and_response_0.pdf?emrc=d3ca32
► Papagiannis, M. D. 1985, "SETI - a look into the future.", The search for extraterrestrial life: recent development, 543: https://ui.adsabs.harvard.edu/abs/1985IAUS..112..543P
► Scoggins, M. & Kipping, D. 2023, "Lazarus stars: numerical investigations of stellar evolution with star-lifting as a life extension strategy", MNRAS, 523, 3251: arxiv.org/abs/2210.02338
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:34 Tamuz Dekel - Quiet Pull
3:05 We Dream of Eden - Discovery
4:23 Hill - World of Wonder [open.spotify.com/track/7kYX7Gq7wWwGwvZbMfu9Qv]
6:28 Chris Zabriskie - Music from Neptune Flux 04
8:59 Hill - Arctic Warmth
11:54 Hill - Northern Borders
15:13 Hill - Fragile
17:45 Indive - Trace Correction
CHAPTERS
0:00 Prologue
0:39 Inception
3:11 Incogni
4:27 Mechanical Stability
8:31 Gravitational Stability
11:08 Stellar Feedback
13:42 Computational Limits
16:23 Rings and Swarms
17:45 Outro and Credits
#DysonSphere #Astronomy #CoolWorlds
Some startling discoveries from JWST and now Euclid and shaking up our ideas of planet formation and evolution - free floating worlds that really tax our current theories and could be just the tip of the iceberg. Join us today as we explore a "jumbo" mystery that's recently emerged in astronomy...
Written & presented by Prof. David Kipping.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to T. Widdowson, D. Smith, L. Sanborn, C. Bottaccini, D. Daughaday, S. Brownlee, E. West, T. Zajonc, 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, M. Sanford, T. Donkin, A. Schoen, K. Dabrowski, R. Ramezankhani, J. Armstrong, S. Marks, B. Smith, J. Kruger, S. Applegate, E. Zahnle, N. Gebben, J. Bergman, C. Macdonald, M. Hedlund, P. Kaup, W. Evans, RAND Corp., N. Corwin, K. Howard, G. Metts, R. Provost, G. Fullwood, N. De Haan, R. Williams, E. Garland, R. Lovely, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, S. Thayer, T. Edris, F. Blood, M. O'Brien, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, B. Reese, O. Shabtay, X. Yao, S. Saverys, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, B. Devermont, Y. Muheim, A. Stark, C. Caminero & P. Borisoff.
REFERENCES
► McCaughrean, M. J. & Pearson, S. G. 2023, "A JWST survey of the Trapezium Cluster & inner Orion Nebula. I. Observations & overview": arxiv.org/abs/2310.03552
► Pearson, S. G. & McCaughrean, M. J. 2023, "Jupiter Mass Binary Objects in the Trapezium Cluster": arxiv.org/abs/2310.01231
► Wang, Y., Perna, R., Zhu, Z. 2024, "Floating binary planets from ejections during close stellar encounters", arxiv.org/abs/2310.06016
► Zwart, S. P. & Hochart, E. 2023, "The origin and evolution of wide Jupiter Mass Binary Objects in young stellar clusters": arxiv.org/abs/2312.04645
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00 Hill - There is but One Good [open.spotify.com/track/1vlxAsmQaHJo1HyvYJF770]
3:39 Falls - Life in Binary
5:10 Hill - Circle
10:13 Chris Zabriskie - The Sun is Scheduled to Come Out Tomorrow
13:23 Indive - Trace Correction
CHAPTERS
0:00 Free Floating Planets
3:39 YT Premium
5:10 Seeking Rogue Worlds
7:12 A Binary Headache
13:23 Outro & Credits
#Astronomy #JWST #CoolWorlds
Written & presented by Prof. David Kipping.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, M. Sanford, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, 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, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer, T. Edris, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay, X. Yao, S. Saverys, M. Pittelli, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, R. Strain, B. Devermont, Y. Muheim & A. Stark.
REFERENCES
► Kipping & Geraint 2024, "Do SETI Optimists Have a Fine-Tuning Problem?", International Journal of Astrobiology, submitted (drive.google.com/file/d/1OxsjoOm8yJA7V3Yn_qt_sKshX8EYGT9U)
► Jaynes 1968, "Prior Probabilities", IEEE Transactions on Systems Science and Cybernetics , 4, 227: ieeexplore.ieee.org/document/4082152
CHAPTERS
0:00 Aliens!
1:00 Jaynes' Experiment
3:33 What about Drake?
6:31 Birth-Death Balance
9:51 Bridging to Jaynes
11:04 Challenging the Optimists
13:17 Just Sample More Stars?
15:39 Disequilibria
17:22 The Case for SETI
19:31 Outro & Credits
#Aliens #AreWeAlone #CoolWorlds
NASA is the primary means through which US astronomy is funded, which in turn leads astronomy globally. But significant cuts to NASA this year are hurting programs across the board, and many worry that the future looks grim for NASA's astronomy programs due to two growing problems on its horizon. Join us as we explore what's happening and what you can do.
Written & presented by Prof. David Kipping. Special thanks to Grant Tremblay for useful information in preparing this video.
→ Head to www.SaveChandra.org for information on how to save NASA's Chandra telescope
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, M. Sanford, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, 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, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer, T. Edris, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay, X. Yao, S. Saverys, M. Pittelli, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, R. Strain, B. Devermont, Y. Muheim & A. Stark.
REFERENCES
► NASA budget figures spreadsheet: https://t.co/kt8pE0anCT
► Rasmussen, S. 2023, "Has the Last Great Space Observatory Already Launched?", Scientific American: scientificamerican.com/article/has-the-last-great-space-observatory-already-launched
► HST & Beyond Committee Report 1996: https://www.stsci.edu/stsci/org/hst-and-beyond-report.pdf
► NASA IRB JWST Report 2018: nasa.gov/wp-content/uploads/2015/01/webb_irb_report_and_response_0.pdf?emrc=d3ca32
► Reichhardt, T. 2006, "Is the next big thing too big?", Nature: nature.com/articles/440140a
► Elvis, M. 2016, "What Can Space Resources do for Astronomy and Planetary Science?", Space Policy, 37, 65: arxiv.org/pdf/1608.01004
► Van Belle, G., 2021, "The Scaling Relationship Between Telescope Cost and Aperture Size for Very
Large Telescopes", Proceedings of the SPIE, 5489, 563: arxiv.org/pdf/2107.09605
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00 Hill - A Slowly Lifting Fog
3:36 Hill - Unhurried
5:58 Chris Zabriskie - Music From Neptune Flux 4
8:29 Hill - World of Wonder
11:18 Falls - Life in Binary
15:27 Chris Zabriskie - Music From Neptune Flux 1
18;24 Joachim Heinrich - Y
20:42 Indive - Fusion
CHAPTERS
0:00 Astronomy Funding
5:58 Incogni
7:18 Crisis Ahead
20:42 Outro & Credits
#NASA #Astronomy #CoolWorlds
Today we explore a problem that has haunted theoretical physicists for decades and remains a topic of active debate - do black holes destroy information? A key precept in quantum theory is that information should be conserved, yet anything that falls into a black hole is seemingly obliterated. How can we reconcile our theories of gravity with that of the quantum world? And could the answer transform the way we look at the Universe...
Written & presented by Prof. David Kipping. Special thanks to Prof Janna Levin for fact checking and for her wonderful book that inspired this video, "Black Hole Survival Guide" https://a.co/d/eqqP6z1
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, 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, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer, T. Edris, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay, X. Yao, S. Saverys, M. Pittelli, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, R. Strain, B. Devermont, & Y. Muheim.
REFERENCES
► Bekenstein, J. 1972, "Black Holes and Entropy", Physical Review D: https://ui.adsabs.harvard.edu/abs/1973PhRvD...7.2333B
► Hawking, S. 1975, "Particle Creation by Black Holes", Communications In Mathematical Physics,: https://ui.adsabs.harvard.edu/abs/1975CMaPh..43..199H
► Hooft, G.'t, 1993, "Dimensional Reduction in Quantum Gravity", General Relativity & Quantum Cosmology: https://ui.adsabs.harvard.edu/abs/1993gr.qc....10026T
► Susskind, L. 1995, "The World as a Hologram", Journal of Mathematical Physics: https://ui.adsabs.harvard.edu/abs/1995JMP....36.6377S
► Maldacena, J. 1997, "The Large N Limit of Superconformal field theories and supergravity", Advances in Theoretical and Mathematical Physics: https://ui.adsabs.harvard.edu/abs/1998AdTMP...2..231M
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00 Hill - The Travelers [open.spotify.com/track/5EfCXFyDpZmu0u6hM3ByjK?si=76241b8ce56747a4]
2:51 Chris Zabriskie - We Were Never Meant to Live Here
4:30 Hill - The Great Alchemist [open.spotify.com/track/3PAx36jIsKiQMT9CQsRk4G?si=c00e84291e664f8e]
9:33 Falls - Life in Binary
11:55 Hill - A Slowly Lifting Fog [open.spotify.com/track/0GgkyL3y22kFslT6wUsKlt?si=3f07e63c56674a21]
13:23 Falls - Ripley
17:06 Chris Zabriskie - Cylinder Seven
19:11 Joachim Heinrich - Y
21:32 Indive - Halo Drive
CHAPTERS
0:00 Prologue
0:30 Black Holes 101
3:18 Storyblocks
4:30 Unitarity
6:19 Into the Black Hole
7:19 Hawking Radiation
9:33 Entanglement
11:29 The Paradox
13:56 Solutions
15:02 Holography
17:48 Concessions
19:11 Firewall
19:48 Conclusions
21:32 Outro & Credits
#BlackHoles #Cosmology #CoolWorlds
Nuclear weapons are the most terrifying invention of humanity. Could our genius to create such weapons also end them? Today we explore how neutrinos could be used to do just that, fizzling out nukes anywhere on Earth and with no defense.
Written & presented by Prof. David Kipping, edited by Jorge Casas. Special thanks to Sam Gregson (youtube.com/@BadBoyofScience) for fact checking.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
REFERENCES
► The IceCube Collaboration 2023, "Observation of high-energy neutrinos from the Galactic plane", Science, 380, 1338: arxiv.org/abs/2307.04427
► Sugawara et al. 2003, "Destruction of Nuclear Bombs Using Ultra-High Energy Neutrino Beam", arXiv:hep-ph/0305062: arxiv.org/abs/hep-ph/0305062
► King 1999, "Potential Hazards from Neutrino Radiation at Muon Colliders", Proceedings of the 1999 IEEE Particle Accelerator Conference. 29 Mar - 2 Apr 1999, New York, New York. 18th IEEE Particle Accelerator Conference, p.318-320: arxiv.org/abs/physics/9908017
► Silagadze 2008, "SETI and muon collider", Acta Physica Polonica B, 39, 2943: arxiv.org/abs/0803.0409
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, 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, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer, T. Edris, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay, X. Yao, S. Saverys, M. Pittelli, A. Nimmerjahn & C. Seay.
MUSIC
0:00 Stephen Keech - Fable
1:25 Brad Hill - It’s Always Darkest Before The Dawn
3:54 Brad Hill - World of Wonder
5:00 Chris Zabriskie - Music From Neptune Flux 04
7:46 Brad Hill - Arctic Warmth
10:36 Brad Hill - Northern Boards
13:25 Joachim Heinrich - Stjärna
14:58 Brad Hill - Fragile
CHAPTERS
0:00 Neutrinos
3:39 Incogni
5:08 Neutrino Factories
9:11 Applications
14:19 My Take
16:17 Outro & Credits
#nuclearwar #nuke #coolworlds
One of strangest discoveries in astronomy is one you've probably never heard of - Przybylski’s Star. This is a star that defies natural explanation and has many wondering whether this could be evidence of alien life, a star being deliberately "salted" by some advanced civilization. Join us today to learn more.
Written & presented by Prof. David Kipping, edited by Jorge Casas. Special thanks to Jason Wright for fact checking and for his wonderful blog that inspired this video - https://sites.psu.edu/astrowright/przybylskis-star/.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, 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, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer, T. Edris, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay, X. Yao, S. Saverys, M. Pittelli, A. Nimmerjahn & C. Seay.
REFERENCES
► Przybylski, A. 1977, "Is iron present in the atmosphere of HD 101065?", MNRAS 178, 71: https://ui.adsabs.harvard.edu/abs/1977MNRAS.178...71P
► Wolff S. & Hagen, W. 1976, "The magnetic field of HD 101065", PASP 88, 119: https://ui.adsabs.harvard.edu/abs/1976PASP...88..119W
► Gopka, V. et al. 2008, "Identification of absorption lines of short half-life actinides in the spectrum of Przybylski's star (HD 101065)", KPCB 24, 89: https://ui.adsabs.harvard.edu/abs/2008KPCB...24...89G/abstract
► Whitemire, D. & Wright, D. 1980, "Nuclear waste spectrum as evidence of technological extraterrestrial civilizations", Icarus 42, 149: https://ui.adsabs.harvard.edu/abs/1980Icar...42..149W/abstract
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00: Arc - Hill
0:30: Falls - Ripley
2:07: Cylinder Seven - Chris Zabriskie
6:39: There is But One Good - Hill
24:32: Y - Joachim Heinrich
CHAPTERS
0:00 A Peculiar Star
2:39 Spectroscopic Strangeness
5:25 It Gets Weirder
5:50 LMNT
7:15 Impossible Chemistry
9:44 Explanations
13:09 Aliens
16:12 Outro & Credits
#Aliens #Astrobiology #CoolWorlds
We usually celebrate the big wins, the major discoveries, the eureka moments... but sometimes the most important moments in science aren't like this. Today we explore a pivotal moment that may have saved the field of exoplanets from a much darker path...
Written & presented by Prof. David Kipping. Thanks to Matt Bailes for graciously coming on.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, 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, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer, T. Edris, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay, X. Yao, S. Saverys & M. Pittelli
REFERENCES
► Bailes, M., Lyne, A. & Shemar, S. 1990, "A planet orbiting the neutron star PSR1829–10", Nature 352, 311: nature.com/articles/352311a0
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00: Arc - Hill
0:30: Falls - Ripley
2:07: Cylinder Seven - Chris Zabriskie
6:39: There is But One Good - Hill
24:32: Y - Joachim Heinrich
CHAPTERS
0:00 Nightmare Scenario
2:24 Astronomical Errors
4:55 BetterHelp
6:39 PSR 1829
8:49 Matt Bailes Interview
24:51 Painful Truths
26:54 Outro & Credits
#Integrity #Science #CoolWorlds
Written & presented by Prof. David Kipping.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, A. Harrison, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, E. Loomans, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay & X. Yao.
REFERENCES
► Dyson, F., 1979, "Time without end: Physics and biology in an open universe", Rev. Modern Phys, 51, 447: https://ui.adsabs.harvard.edu/abs/1979RvMP...51..447D
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00 Sid Acharya - Journey
2:49 Sid Acharya - Stories from the Sky
6:11 Falls - Ripley
7:45: Chris Zabriskie - Cylinder Four
9:55 Hill - Echoes of Yesterday (open.spotify.com/track/4AfA4TrR2WPUJ6N6Th5j8B?si=eed02e1a8f124345)
13:18 Hill - The Now Is Only a Thin Slice of Who I Am (open.spotify.com/track/396DSpd9UzSEVNxJORJU1n?si=35659345189a4680)
19:25: Y - Joachim Heinrich
#EternalIntelligence #LivingForever #CoolWorlds
Could there be a bizarre exotic type of star out there made of quarks? What would these things be like and how could they form? Join us as we explore quark stars, and the terrifying implications they have for forging strange matter within their cores...
Written & presented by Prof. David Kipping. Edited by Jorge Casas. Special thanks to Dr Sam Gregson (www.youtube.com/@BadBoyofScience) for fact checking our script.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, A. Harrison, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, E. Loomans, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay & X. Yao.
REFERENCES
► Drake et al 2002, Is RX J185635-375 a Quark Star?, ApJ 572, 996: arxiv.org/abs/astro-ph/0204159
► Truemper et al 2003, The Puzzles of RX J1856.5-3754: Neutron Star or Quark Star?, Nuc Phys B Proc S 132, 560: arxiv.org/abs/astro-ph/0312600
► Kareet et al 2006, Evidence for 1122 Hz X-Ray Burst Oscillations from the Neutron-Star X-Ray Transient XTE J1739-285, ApJ 657, L97: arxiv.org/abs/astro-ph/0611716
► Chakrabarty 2008, The Spin Distribution of Millisecond X-ray Pulsars, In "A Decade if Accreting Millisecond X-Ray Pulsars", AIP Conf Proc 1068, 67: arxiv.org/abs/0809.4031
► Annala et al 2020, Evidence for quark-matter cores in massive neutron stars, Nat Phys 16, 907: arxiv.org/abs/1903.09121
► Cherman et al 2009, Bound on the speed of sound from holography, Phys Rev D 80, 066003: journals.aps.org/prd/abstract/10.1103/PhysRevD.80.066003
► Ouyed et al 2002, Quark Nova, A&A 390, 39: arxiv.org/abs/astro-ph/0105109
► Gell-Mann 1964, A schematic model of baryons and mesons, Phys Lett 8, 214: linkinghub.elsevier.com/retrieve/pii/S0031916364920013
► Zweig 1964, An SU3 model for strong interaction symmetry and its breaking, Developments in the Quark Theory of Hadrons, 22: https://cds.cern.ch/record/570209
► Rochester & Butler 1947, Evidence for the Existence of New Unstable Elementary Particles, Nat 160, 855: nature.com/articles/160855a0
► Bodmer 1971, Collapsed Nuclei, Phys Rev D 4, 1601: journals.aps.org/prd/abstract/10.1103/PhysRevD.4.1601
► Witten 1984, Cosmic separation of phases, Phys Rev D 30, 272: journals.aps.org/prd/abstract/10.1103/PhysRevD.30.272
► Farhi & Jaffe 1984, Strange matter, Phys Rev D 30, 2379: journals.aps.org/prd/abstract/10.1103/PhysRevD.30.2379
► Caldwell & Friedman 1991, Evidence against a strange ground state for baryons, Phys Lett B 264, 143: https://ui.adsabs.harvard.edu/link_gateway/1991PhLB..264..143C/PUB_HTML
► Ali Alpar 1987, Comment on Strange Stars, Phys Rev Lett 58, 2152: journals.aps.org/prl/abstract/10.1103/PhysRevLett.58.2152
► Madsen 2000, Intermediate mass strangelets are positively charged, Phys Rev Lett 85, 4687: arxiv.org/abs/hep-ph/0008217
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00: A Slowly Lifting Fog - Brad Hill
3:44: Unhurried - Unkown
5:12: Music From Neptune Flux 04 - Chris Zabriskie
8:05: World of Wonder - Unknown
9:42: Falls - Life in Binary
14:08: Chasing Out the Chaos - Unknown
16:00: Cylinder Seven - Chris Zabriskie
23:22: Y - Joachim Heinrich
CHAPTERS
0:00 Prologue
0:30 Neutron Stars
5:06 Quark Stars
8:09 NordVPN
9:43 Evidence for Quark Stars
12:12 Why They're Probably Real
15:50 Strange Matter Hypothesis
22:08 Is Strange Matter Real?
24:55 Outro & Credits
#QuarkStars #StrangeMatter #CoolWorlds
Venus resembles our Earth in so many ways, yet in many others it's frightningly different. Was Venus always this way? Could it have once been habitable? And if so, what went wrong? Why did Venus transform to the hellscape we see today? Let's explore the world next door...
Written & presented by Prof. David Kipping. Edited by Jorge Casas. Special thanks to Prof Stephen Kane for fact checking our script.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, A. Harrison, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, E. Loomans, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay & X. Yao.
REFERENCES
► Weller, M. et al. 2023, "Venus’s atmospheric nitrogen explained by ancient plate tectonics", Nature Astronomy: nature.com/articles/s41550-023-02102-w
► Truong, N. & Lunine, J. 2021, "Volcanically extruded phosphides as an abiotic source of Venusian phosphine", PNAS, 118, e2021689118: doi.org/10.1073/pnas.2021689118
► Greaves, J. et al. 2021, "Phosphine gas in the cloud decks of Venus", Nature Astronomy, 5, 655: arxiv.org/abs/2009.06593
► Way, M. et al. 2016, "Was Venus the First Habitable World of our Solar System?", Geophysical Research Letters, 43, 8376: arxiv.org/abs/1608.00706
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
0:00 Hill - The Great Alchemist
3:58 Hill - Unhurried
5:31 Hill - World of Wonder
7:27 Chris Zabriskie - Music from Neptune Flux 04
8:40 Hill - A Slowly Lifting Fog
11:07 Falls - Life in Binary
15:38 Hill - Chasing out the Chaos
19:29 Chris Zabriskie - Cylinder Seven
23:28 Joachim Heinrich - Y
CHAPTERS
0:00 Not With 10,000 Men...
2:20 The Mysterious World
3:45 Communist Venus
5:34 Incogni
6:59 Venusian Volcanism
8:31 Resurfacing
10:15 92 Bars
12:24 The Outgassing Conundrum
13:41 Lost Oceans
15:30 Was Venus Habitable?
18:09 Venusian Life
21:54 Future Exploration
23:08 Endgame
24:45 Outro & Credits
#Venus #CoolWorlds
What kind of evidence would be needed to convince the world of alien life? Sagan said that "extraordinary claims require extraordinary evidence", but what exactly is "extraordinary"? Today we explore the difficult problem of dealing with potentially ambiguous evidence and how it might affect our search for life.
Written & presented by Prof. David Kipping. Edited by Jorge Casas.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, A. Harrison, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, E. Loomans, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, & J. Smallbon.
REFERENCES
► Brzycki, B. et al. 2023, "On Detecting Interstellar Scintillation in Narrowband Radio SETI", ApJ, 952, 46: arxiv.org/abs/2307.08793
► Davenport, J. et al. 2023, "Searching the SETI Ellipsoid with Gaia", AJ, 164, 117: arxiv.org/abs/2206.04092
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
CHAPTERS
0:00 Diversified Alien Hunting
2:33 NordVPN
3:43 Priors
9:45 Disambiguation
13:04 New Tricks
16:07 Outro & Credits
Direct Air Capture (DAC) has been getting more and more attention over the last few years. Could we avert climate change by pulling carbon dioxide out of the atmosphere? Could we not just stop, but actually *reverse* the damage done? Unfortunately, most don't fully appreciate just quite how much CO2 we've emitted and the outrageous scale of the problem facing us. Today, we apply the fundamental principles of thermodynamics to question whether this is even feasible.
Written & presented by Prof. David Kipping. Edited by Jorge Casas. Fact checking by Alexandra Masegian.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, A. Harrison, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, E. Loomans, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, & J. Smallbon.
REFERENCES
► House, K. Z. et al. 2011, "Economic and energetic analysis of capturing CO2 from ambient air", Proc. Nat. Acad. Sci., 108(51), 20428-33: pubmed.ncbi.nlm.nih.gov/22143760
► Lackner, K. S. 2013, "The thermodynamics of direct air capture of carbon dioxide", Energy, 50, 38: sciencedirect.com/science/article/pii/S0360544212006901
► Long-Innes, R. & Struchtrup, H. 2022, "Thermodynamic loss analysis of a liquid- sorbent direct air carbon capture plant", Cell Reports Physical Science, 3, 100791: sciencedirect.com/science/article/pii/S2666386422000583
► Ozkan, M. et al., 2022, "Current status and pillars of direct air capture technologies", iScience, 25, 103990: sciencedirect.com/science/article/pii/S2589004222002607
► Sanz-Perez E. S. et al., 2016, "Direct Capture of CO2 from Ambient Air", Chem. Rev., 116, 11840: pubs.acs.org/doi/10.1021/acs.chemrev.6b00173
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
► Hill - A Slowly Lifting Fog [0:00]
► Falls - Life in Binary [3:24]
► Hill - Northern Boards [8:03]
► Hill - To Quiet the Drumming Inside My Head [11:13]
► Hill - Chasing out the Chaos [15:29]
► Chris Zabriskie - Cylinder Seven [19:23]
► Joachim Heinrich - Y [22:53]
CHAPTERS
0:00 Climate Change
2:44 Removal Requirements
3:38 Possible Solutions
5:03 Introducing DAC
5:43 Climate Anxiety
7:12 DAC Principles
8:14 Scalability
9:29 Thermodynamics
12:08 Progressive DAC
13:32 RCPs
15:09 Simulations
17:03 Energy Requirements
19:34 Efficiency
21:21 Conclusions
24:35 Outro and credits
#DirectAirCapture #ClimateChange #NetZero
Exoplanets was a transformative discovery for astronomy. Exomoons is the next. I’ve spent most of my career looking for exomoons and today I explain the five reasons why finding them isn’t just fascinating - it’s necessary.
Written & presented by Prof. David Kipping. Edited by Jorge Casas.
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, A. Harrison, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, E. Loomans, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams & J. Sattler.
CHAPTERS
0:00 Reason 1
03:20 Reason 2
7:18 Sponsorship
8:50 Reason 3
10:48 Reason 4
12:33 Reason 5
16:26 The Future
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
► Hill - A Slowly Lifting Fog
► Falls - Life in Binary
► Chris Zabriskie - We Were Never Meant to Live Here
► Chris Zabriskie - Cylinder Two
► Hill - To The Quiet Drumming Inside My Head [open.spotify.com/track/1QAGagFWsbTZyGfAJxs06d]
► Hill - Chasing Out The Chaos [open.spotify.com/album/4pmiXcyRpPlFjWjb45pYLx]
► Joachim Heinrich - Y
#astronomy #jwst #exoplanets
A faster-than-light (FTL) warp drive would arguably represent the most important invention of all time. In 1994, Miguel Alcubierre gave all of us hope as he found a solution within general relativity that would cause the necessary warping of space. But after nearly 30 years of further study, what does our current understanding of physics say about the feasibility of a warp drive?
Written & presented by Prof. David Kipping. Thanks to Bobrick Martire for clarifications and to John Michael Godier and team for audio from their interview with Alcubierre (youtu.be/JafY92PhgKU). Thumbnail image by Zamanday Yolculugunu (www.zamandayolculuk.com)
→ Support our research: coolworldslab.com/support
→ Get merch: teespring.com/stores/cool-worlds-store
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, A. Harrison, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, E. Loomans, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams & J. Sattler.
REFERENCES
► Alcubierre 1994, Class. Quant. Grav. 11, L73 arxiv.org/abs/gr-qc/0009013
► Everett 1996, Phys. Rev. D 53, 7365 journals.aps.org/prd/abstract/10.1103/PhysRevD.53.7365
► Krasnikov 1998, Phys. Rev. D 57, 4760 arxiv.org/abs/gr-qc/9511068
► Pfenning & Ford 1998, Phys. Rev. D 57, 3489 arxiv.org/abs/gr-qc/9710055
► Van Den Broeck 1999, Class. Quant. Grav. 16, 3973 arxiv.org/abs/gr-qc/9905084
► Bobrick & Martire 2021, Class. Quant. Grav. 38, 22 arxiv.org/abs/2102.06824
► Fell & Heisenberg 2021, Class. Quant. Grav. 38, 16 arxiv.org/abs/2104.06488
► Lentz 2021, Class. Quant. Grav. 38, 14 iopscience.iop.org/article/10.1088/1361-6382/abe692
► Santiago et al. 2022, Phys. Rev. D 105, 064038 arxiv.org/abs/2105.03079
► McMonigal et al. 2012, Phys. Rev. D 85, 064024 arxiv.org/abs/1202.5708
► Finazzi et al. 2009, Phys. Rev. D 79, 124017 arxiv.org/abs/0904.0141
► Coule 1998, Class. Quant. Grav. 15, 2523 iopscience.iop.org/article/10.1088/0264-9381/15/8/026
► Van Den Broeck 1999, arXiv arxiv.org/abs/gr-qc/9906050
► Gast 2021, Scientific American www.scientificamerican.com/article/star-treks-warp-drive-leads-to-new-physics
► Hawking 1992, Phys. Rev. D 46, 603 journals.aps.org/prd/abstract/10.1103/PhysRevD.46.603
► Alcubierre & Lobo 2017, Wormholes, Warp Drives and Energy Conditions, Fundam. Theor. Phys. 189, 257 arxiv.org/abs/2103.05610
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (creativecommons.org/licenses/by/4.0) or with permission from the artist.
► 0:00 Sid Acharya - Searching for Answers
► 3:18 Falls - Life in Binary
► 5:01 Hill - There is but One Good [open.spotify.com/track/1vlxAsmQaHJo1HyvYJF770]
► 9:49 Chris Zabriskie - Cylinder Four
► 11:42 Falls - Ripley
► 14:00 Chris Zabriskie - We Were Never Meant to Live Here
► 17:06 Caleb Etheridge - Always Dreaming
► 18:52 Hill - The Promise of You [open.spotify.com/track/4VDKids2Mbi0IcpKxnwLQ9?si=e4e8c0e0f3ff44f0]
► 21:11 Joachim Heinrich - Y
► 23:34 Indive - Trace Correction
CHAPTERS
0:00 Intro
3:18 Energy
5:01 Exotica
8:26 Blinkist
9:49 Horizons
11:42 Radiation
14:00 Catch-22
17:06 Causality
21:11 Conclusions
23:24 Outro
#astrophysics #warpdrive #ftlfasterthanlight
Over the last few years, there has been growing public attention and interest in UFOs/UAPs fuelled by whistleblowers, leaked videos and of course the media. But astronomers have been looking for life in the Universe for decades already, using systematic searches and established scientific methodologies. No-one spends more time looking up and thinking about aliens than astronomers, so what do we think about this? How does science more broadly ingest UFO claims? Today, in the spirit of transparency, we explore this complex and evolving topic...
Written and presented by Prof David Kipping. Edited by Jorge Casas.
→ Support our research program: coolworldslab.com/support
→ Get Stash here! teespring.com/stores/cool-worlds-store
→ Check out our podcast over at www.youtube.com/@CoolWorldsPodcast
THANK-YOU to our supporters D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, A. Harrison, B. Seeley, F. Blood, M. O'Brien & P. Muzyka
::References::
► Yingling et al. (2023), "Faculty perceptions of unidentified aerial phenomena", Humanities and Social Sciences Communications, 10, 246, : nature.com/articles/s41599-023-01746-3
► Kopparapu & Haqq-Misra (2020), Scientific American, ‘Unidentified Aerial Phenomena,’ Better Known as UFOs, Deserve Scientific Investigation: scientificamerican.com/article/unidentified-aerial-phenomena-better-known-as-ufos-deserve-scientific-investigation
::Music::
Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (creativecommons.org/licenses/by/4.0), or with permission from the artist.
► 0:00 - A Slowly Lifting Fog - Brad Hill
► 3:41 - Falls - Life in Binary
► 6:46 - Northern Boards - Brad Hill
► 10:34 - To Quiet the Drumming Inside My Head - Brad Hill
► 14:48 - Chasing Out the Chaos - Brad Hill
► 19:44 - Cylinder Seven - Chris Zabriskie
► 25:55 - Joachim Heinrich - Y
::Chapters::
00:00 Introduction
02:27 A Science 101
05:07 Sponsored Message
06:47 Ingesting UAPs into Science
19:30 Academics on UAPs
21:53 SETI Scientists on UAPs
24:39 Concluding Thoughts
26:59 Outro & Some Interviews
#UFO #UAP #SETI
youtu.be/JOpVQ1OhDzQ
Written and presented by Prof David Kipping. Edited by Jorge Casas. Thanks to Matt Scoggins for checking the script.
→ Support our research program: coolworldslab.com/support
→ Get Stash here! teespring.com/stores/cool-worlds-store
→ Check out our podcast over at www.youtube.com/@CoolWorldsPodcast
THANK-YOU to our supporters D. Smith, M. Sloan, L. Sanborn, 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, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, 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, A. Harrison, B. Seeley, F. Blood, M. O'Brien & P. Muzyka.
::References::
► Schröder & Smith, 2008, "Distant future of the Sun and Earth revisited", MNRAS, 386, 155: arxiv.org/abs/0801.4031
::Music::
Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (creativecommons.org/licenses/by/4.0), or with permission from the artist.
► Hill - Pinhole of Light [open.spotify.com/track/1gJEKPQETo3GDqUAhVomJD]
► Chris Zabriskie - Stories About the World That Once Was
► Falls - Ripley
► Hill - Don't Think [open.spotify.com/track/1KUcWR8FzkVVKzyq8mJH3O]
► Hill - A Slowly Lifting Fog [open.spotify.com/track/0GgkyL3y22kFslT6wUsKlt?si=35f82c623b9f486d&nd=1]
► Chris Zabriskie - The Ocean's Continue to Rise
► Joachim Heinrich - Y
► Indive - Fusion
::Chapters::
00:00 Introduction
02:06 The Modern Sun
06:41 Leaving the Main Sequence
09:49 Sub-Giant Phase
12:24 Giant Mode
17:05 The Helium Flash
19:07 A Second Life
20:58 Asymptotic Hell
23:25 The White Dwarf Sun
25:38 The Bitter End
27:54 Outro & Credits
#TheSun #DistantFuture #Astronomy
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: coolworldslab.com/support
→ Get Stash here! teespring.com/stores/cool-worlds-store
THANK-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": 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: arxiv.org/abs/1809.07252
► Gray, R. H. 2015, "The Fermi Paradox is Neither Fermi's Nor a Paradox", Astrobiology, 15, 195: 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": arxiv.org/abs/1806.02404
::Music::
Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (creativecommons.org/licenses/by/4.0), or with permission from the artist.
► Brad Hill - Echoes of Yesterday (0:00) [open.spotify.com/track/4AfA4TrR2WPUJ6N6Th5j8B?si=ecb4d3f6f25744cf]
► Brad Hill - Circle (5:22) [open.spotify.com/track/5ahoF1JU8MMTgH7NIbZNvv?si=79c036a9ace4463c]
► Falls - Life in Binary (9:38)
► Brad Hill - The Great Alchemist (14:08) [open.spotify.com/album/0sfu5xfxKyQCxykRUlQATy]
► Brad Hill - There Is But One Good (19:03) [open.spotify.com/track/1vlxAsmQaHJo1HyvYJF770]
► Joachim Heinrich - Y (25:01)
::Chapters::
00:00 Introduction
01:22 A Brief History
06:13 Two Fermi Paradoxes
08:16 Sponsorship
09:38 The Eerie Silence
11:56 Direct Fermi Paradox
15:11 Capability?
18:38 Motivation?
20:53 Anthropicism
25:01 Extragalactic SETI
27:17 Outro & credits
#fermiparadox #aliens #seti
Written and presented by Prof David Kipping, guest starring Jackson Kipping and edited by Jorge Casas.
→ Support our research program: coolworldslab.com/support
→ Get Stash here! teespring.com/stores/cool-worlds-store
THANK-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.
::Music::
Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (creativecommons.org/licenses/by/4.0), or with permission from the artist
::References::
► Spinelli & Ghirlanda, 2023, The Impact of GRBs on Exoplanetary Habitability, Universe, 9, 60: mdpi.com/2218-1997/9/2/60
► Gehrels et al., 2003, Ozone Depletion from Nearby Supernovae, ApJ, 585, 1169: arxiv.org/abs/astro-ph/0211361
► Thomas et al., 2006, Gamma-ray bursts and terrestrial planetary atmospheres, New. J. Phys., 8, 120: iopscience.iop.org/article/10.1088/1367-2630/8/7/120
► Fisher & Valenti, 2005, The Planet-Metallicity Correlation, ApJ, 622, 1102: iopscience.iop.org/article/10.1086/428383
► Buchhave & Latham, 2005, The Metallicities of Stars with and without Transiting Planets, ApJ, 808, 4: arxiv.org/abs/1507.03557
► Wang & Fisher, 2005, Revealing A Universal Planet-Metallicity Correlation For Planets of Different Sizes Around Solar-Type Stars, AJ, 149, 7: arxiv.org/abs/1310.7830
::Music::
► Chris Zabriskie - Music from Neptune Flux 0:00
► Falls - Ripley 6:06
► Chris Zabriskie - Music from Neptune Flux 9:32
► Brad Hill - A Slowly Lifting Fog 13:53
► Joachim Heinrich - Y 16:58
::Chapters::
00:00 Introduction
02:28 Galactic Habitable Zone
05:09 Supernovae
10:26 GRBs
15:31 Multi-Threats
16:43 Planet formation
18:53 Planet retention
20:11 The Final Picture
22:56 Outro & Credits
#GalacticHabitableZone #Supernovae #GammaRayBursts
Written and presented by Prof David Kipping, edited by Jorge Casas.
→ Support our research program: coolworldslab.com/support
→ Get Stash here! teespring.com/stores/cool-worlds-store [themed T-shirt for the video is here: cool-worlds-store.creator-spring.com/listing/why-is-there-anything]
THANK-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.
::Music::
Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (creativecommons.org/licenses/by/4.0), or with permission from the artist
► 00:00 Hill - The Great Alchemist [open.spotify.com/track/3PAx36jIsKiQMT9CQsRk4G?si=035fc819505445a1]
► 04:28 Falls - Ripley
► 08:11 Joachim Heinrich - Stjärna
► 09:49 Hill - Evening Approaches [open.spotify.com/track/3mYMEDKgj4qwBkuwcXeb89]
► 11:18 Hill - Fragmented [open.spotify.com/track/1z9xpNXpQmbXYd9M8dcJhE]
► 13:49 Hill - A Slowly Lifting Fog [open.spotify.com/track/0GgkyL3y22kFslT6wUsKlt]
► 16:57 Joachim Heinrich - Y
::Chapters::
00:00 Restless Nights
02:35 Candle in the Dark
09:25 Ontological Crises
10:35 Why Not Nothing?
13:19 A Brutal Possibility
16:59 A Personal Reflection
#WhyIsThereAnything #WhyNotNothing #CoolWorlds
Written and presented by Prof David Kipping, edited by Jorge Casas. Thanks to Ryan MacDonald (youtube.com/@martiancolonist) for checking over some technical points.
→ Support our research program: coolworldslab.com/support
→ Get Stash here! teespring.com/stores/cool-worlds-store
THANK-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 & F. Demopoulos.
::References::
► Schwieterman et al., 2018, Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life, Astrobiology, 18, 6: arxiv.org/abs/1705.05791
► Kozakis et al. 2022, Is ozone a reliable proxy for molecular oxygen? I. The O2-O3 relationship for Earth-like atmospheres, A&A, 665, 156: arxiv.org/abs/2208.09415
► Leung et al. 2022, Alternative Methylated Biosignatures I: Methyl Bromide, A Capstone Biosignature, ApJ, 938, 6: arxiv.org/abs/2208.07393
► Lin et al. 2021, Differentiating Modern and Prebiotic Earth Scenarios for TRAPPIST-1e: High-resolution Transmission Spectra and Predictions for JWST, MNRAS, 505, 3562: arxiv.org/abs/2105.09319
► Fauchez et al. 2019, Impact of Clouds and Hazes on the Simulated JWST Transmission Spectra of Habitable Zone Planets in the TRAPPIST-1 System, ApJ, 887, 194: arxiv.org/abs/1911.08596
► Kaltenegger et al. 2020, The White Dwarf Opportunity: Robust Detections of Molecules in Earth-like Exoplanet Atmospheres with the James Webb Space Telescope, ApJ, 901, 1: arxiv.org/abs/2009.07274
► Limbach et al. 2022, A New Method for Finding Nearby White Dwarf Exoplanets and Detecting Biosignatures, MNRAS, 517, 2622: arxiv.org/abs/2209.12914
::Music::
Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (creativecommons.org/licenses/by/4.0), or with permission from the artist
► 00:00 Hill - All Flesh Is as the Grass [open.spotify.com/track/1WuMK4qy9tUSGMINoEClxL?si=5635838259b34fa4]
► 03:57 & 14:59 Hill - The Great Alchemist [open.spotify.com/track/3PAx36jIsKiQMT9CQsRk4G?si=035fc819505445a1]
► 08:01 & 18:50 Outside the Sky - Trillions
► 11:57 Hill - We Are Unceasing Beings [open.spotify.com/track/3TnhawPMycRrPuTnKzNGNN?si=bddf4e61177d48c4]
► 25:18 Joachim Heinrich - Stjärna
::Chapters::
00:00 Introduction
01:00 A Biosignature Primer
11:00 Sponsorship
12:21 TRAPPIST-1e
19:12 White Dwarfs
25:29 A Fool's Hope
27:05 Outro and credits
#JWST #AlienLife #Astrobiology
Written and presented by Prof David Kipping, edited by Jorge Casas.
→ Support our research program: coolworldslab.com/support
→ Get Stash here! teespring.com/stores/cool-worlds-store
THANK-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 & F. Demopoulos.
::Music::
Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (creativecommons.org/licenses/by/4.0), or with permission from the artist
► 00:00 Hill - All Flesh Is as the Grass [open.spotify.com/track/1WuMK4qy9tUSGMINoEClxL?si=5635838259b34fa4]
► 03:56 Hill - The Great Alchemist [open.spotify.com/track/3PAx36jIsKiQMT9CQsRk4G?si=035fc819505445a1]
► 07:50 Outside the Sky - Trillions
► 11:41 Hill - We Are Unceasing Beings [open.spotify.com/track/3TnhawPMycRrPuTnKzNGNN?si=bddf4e61177d48c4]
► 14:57 Indive - Halo Drive
::Chapters::
00:00 A Recurring Dream
02:12 The Timescape Ahead
04:06 Gyr Evolution
06:32 A Technological Future?
09:38 What We Leave Behind
11:42 Who Are We To Them?
13:02 Unidirectional
14:57 Outro and credits
#GeologicalTime #Earth #Future
Written and presented by Prof David Kipping, edited by Jorge Casas.
→ Support our research program: coolworldslab.com/support
→ Get Stash here! teespring.com/stores/cool-worlds-store
THANK-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 (creativecommons.org/licenses/by/4.0), or with permission from the artist.
::Chapters::
00:00 What is ChatGPT?
02:53 Rise of the Machines
05:07 Sponsorship
06:27 Challenging ChatGPT
07:58 Question 1
10:00 Question 5
11:15 Question 8
13:14 Question 12
14:16 Question 13
15:29 Question 15
17:48 Question 22
19:25 Question 23
20:57 Question 26
24:31 Final Score
28:10 Outro & Credits
#ChatGPT #ArtificialIntelligence #CoolWorlds
Written and presented by Prof David Kipping, edited by Jorge Casas.
→ Support our research program: coolworldslab.com/support
→ Get Stash here! teespring.com/stores/cool-worlds-store
THANK-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 (creativecommons.org/licenses/by/4.0), or with permission from the artist
► 00:00 Sid Acharya - Sky Sailing
► 01:01 Chris Zabriskie - Cylinder Four
► 03:25 Hill - Loneliness [open.spotify.com/album/6vasPO2FKG0ddtkOiHmqBC?si=qWxcwquXSiaSXAeHFG6OMw]
► 06:35 Chris Zabriskie - Cylinder Five
► 09:19 Hill - Detached [open.spotify.com/album/2RsyjpeBo63MBse1PL2HNr?si=gBFBSqYKQmK-yPJjBE7Udw]
► 12:53 Hill - There Is but One Good [open.spotify.com/album/4pmiXcyRpPlFjWjb45pYLx?highlight=spotify:track:1vlxAsmQaHJo1HyvYJF770]
► 19:08 Chris Zabriskie - Stories About the World That Once Was
► 21:49 Joachim Heinrich - Y
► 24:05 Indive - Halo Drive
::Chapters::
00:00 Introduction
01:16 Hubble's Constant
02:24 Using the CMB
04:34 The Local Universe
06:20 Cepheids
08:24 The Distance Ladder
10:38 The Hubble Tension
11:29 New Physics?
12:50 The Trouble with Cepheids
15:50 Red Giant Saviors
20:17 Giant Headaches
21:04 No Crisis?
22:37 Sensationalism
24:05 Outro and credits
#CrisisInCosmology #HubbleTension #JWST


