Cool Worlds

It's time to take a break for a few weeks but before we do, here's a look ahead at what research we'll be getting up to in 2017! Many of us are heading to the American Astronomical Meeting in Grapevine, TX, so be sure to say hello if you'll be there. Thanks to everyone for tuning in and supporting our channel in 2016!


::More about this Video::

► 229th Meeting of the American Astronomical Society: https://aas.org/meetings/aas229
► Proxima b Transit Results video: https://youtu.be/fLPZiCZtr_k
► Machines Predict Exoplanets video: https://youtu.be/6xxt9ke8uYo
► Outro music by Taylor Davis: https://www.youtube.com/watch?v=dl9kI1yQKZk

::Playlists For Channel::

Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds
Cool Worlds Research ► http://bit.ly/CoolWorldsResearch
Guest Videos ► http://bit.ly/CoolWorldsGuests
Q&A Videos ► http://bit.ly/CoolWorldsQA
Science of TV/Film ► http://bit.ly/ScienceMovies

::Follow us::

SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe
Cool Worlds Lab http://coolworlds.astro.columbia.edu
Twitter https://twitter.com/david_kipping
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THANKS FOR WATCHING!!

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Get ready! On August 21st 2017, Americans will be treated to a rare total Solar eclipse. From coast to coast, everyone in the US should be able to see at least a partial eclipse and be within a day's drive of catching the total eclipse. Here's a quick rundown of what to expect, where to go and how to plan your trip.

::More about this Video::

► The web app you can use to plan your trip (as shown in the video) is available at www.GreatAmericanEclipse.com
► NASA's page on the upcoming eclipse: http://eclipse.gsfc.nasa.gov/SEgoogle/SEgoogle2001/SE2017Aug21Tgoogle.html
► Where to buy your glasses from: https://www.greatamericaneclipse.com/store/ and http://www.eclipse2017.org/glasses_order.htm
► Outro music by Taylor Davis: https://www.youtube.com/watch?v=dl9kI1yQKZk

::Playlists For Channel::

Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds
Cool Worlds Research ► http://bit.ly/CoolWorldsResearch
Guest Videos ► http://bit.ly/CoolWorldsGuests
Q&A Videos ► http://bit.ly/CoolWorldsQA
Science of TV/Film ► http://bit.ly/ScienceMovies

::Follow us::

SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe
Cool Worlds Lab http://coolworlds.astro.columbia.edu
Twitter https://twitter.com/david_kipping
Instagram https://www.instagram.com/cool.worlds

THANKS FOR WATCHING!!

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NYU Professor of Physics, David Grier, dropped in to tell us about his team's amazing work building the world's first real life tractor beam. Just like Star Trek, he explains how their light beam pulls things toward it, how it works and how it could soon be used by NASA.

::More about this Video::

► Prof David Grier's homepage: http://physics.nyu.edu/grierlab/
► "Building Star Trek", Smithsonian Channel: http://www.smithsonianchannel.com/shows/building-star-trek/0/3436402
► Outro music by Taylor Davis: https://www.youtube.com/watch?v=dl9kI1yQKZk

::Playlists For Channel::

Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds
Cool Worlds Research ► http://bit.ly/CoolWorldsResearch
Guest Videos ► http://bit.ly/CoolWorldsGuests
Q&A Videos ► http://bit.ly/CoolWorldsQA
Science of TV/Film ► http://bit.ly/ScienceMovies

::Follow us::

SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe
Cool Worlds Lab http://coolworlds.astro.columbia.edu
Twitter https://twitter.com/david_kipping
Instagram https://www.instagram.com/cool.worlds

THANKS FOR WATCHING!!

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Use code coolworlds at https://incogni.com/coolworlds to get an exclusive 60% off an annual Incogni plan.

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: https://www.coolworldslab.com/support
→ Get merch: https://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: https://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: https://www.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: https://arxiv.org/abs/2210.02338

MUSIC
Licensed 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.
0:34 Tamuz Dekel - Quiet Pull
3:05 We Dream of Eden - Discovery
4:23 Hill - World of Wonder [https://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

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Dr Seth Shostak, Senior Astronomer of the SETI Institute, was at the New England Fall Astronomy Festival with me last week and I took the opportunity to ask him about the news reports of a SETI signal detected in Russia from the star HD 164595. Dr Shostak explains why he's not convinced that we've just heard from another civilization. Apologies for the noisy background and typo on the title: Shostak not Shostack!

::More about this Video::

► CNN News report: http://www.cnn.com/2016/08/31/europe/seti-signal-hd-164595-not-alien-civilization/
► Big Picture Science: http://radio.seti.org/about_the_show
► SETI Institute: http://www.seti.org/
► Outro music by Taylor Davis: https://www.youtube.com/watch?v=dl9kI1yQKZk

::Playlists For Channel::

Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds
Cool Worlds Research ► http://bit.ly/CoolWorldsResearch
Guest Videos ► http://bit.ly/CoolWorldsGuests
Q&A Videos ► http://bit.ly/CoolWorldsQA
Science of TV/Film ► http://bit.ly/ScienceMovies

::Follow us::

SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe
Cool Worlds Lab http://coolworlds.astro.columbia.edu
Twitter https://twitter.com/david_kipping
Instagram https://www.instagram.com/cool.worlds

THANKS FOR WATCHING!!

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Thanks to Storyblocks for sponsoring this video! Download unlimited stock media at one set price with Storyblocks: https://www.storyblocks.com/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: https://www.coolworldslab.com/support
→ Get merch: https://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: https://arxiv.org/abs/2102.01522
► Carter, B. 2008, "Five or six step scenario for evolution?", Int. J. Astrobiology, 7, 103516: https://arxiv.org/abs/0711.1985
► Kipping, D. 2021, "The Red Sky Paradox", PNAS, 118, e2026808118: https://arxiv.org/abs/2106.11207

MUSIC
Licensed 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.
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

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The most fundamental question we can ever ask: Why is something rather than nothing? Not nothing as in no particles or no energy, but nothing as in no space, no time, no laws of physics at all. This is a question that has haunted me for years and today this deepest of questions.

Written and presented by Prof David Kipping, edited by Jorge Casas.

→ Support our research program: https://www.coolworldslab.com/support
→ Get Stash here! https://teespring.com/stores/cool-worlds-store [themed T-shirt for the video is here: https://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 (https://creativecommons.org/licenses/by/4.0/), or with permission from the artist
► 00:00 Hill - The Great Alchemist [https://open.spotify.com/track/3PAx36jIsKiQMT9CQsRk4G?si=035fc819505445a1]
► 04:28 Falls - Ripley
► 08:11 Joachim Heinrich - Stjärna
► 09:49 Hill - Evening Approaches [https://open.spotify.com/track/3mYMEDKgj4qwBkuwcXeb89]
► 11:18 Hill - Fragmented [https://open.spotify.com/track/1z9xpNXpQmbXYd9M8dcJhE]
► 13:49 Hill - A Slowly Lifting Fog [https://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

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Astronomers are finding habitable exoplanets everywhere! We are now starting to think about the next step, how can we use our telescopes to look for signs of life on distant worlds? Cool Worlds Lab astronomer Tiffany Jansen talks about possible atmospheric signals that could indicate the presence of a biosphere, but also the abiotic sources that could fool us all.


::More about this Video::

► Reinhard et al. (2017), "False negatives for remote life detection on ocean-bearing planets: Lessons from the early Earth": https://arxiv.org/abs/1702.01137
► Hein et al. (2013), "Some inconvenient truths about biosignatures involving two chemical species on Earth-like exoplanets": https://arxiv.org/abs/1404.6531
► Wordsworth & Pierrehumbert (2014), "Abiotic oxygen-dominated atmospheres on terrestrial habitable zone planets": https://arxiv.org/abs/1403.2713
► Outro music by Taylor Davis: https://www.youtube.com/watch?v=dl9kI1yQKZk

::Playlists For Channel::

Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds
Cool Worlds Research ► http://bit.ly/CoolWorldsResearch
Guest Videos ► http://bit.ly/CoolWorldsGuests
Q&A Videos ► http://bit.ly/CoolWorldsQA
Science of TV/Film ► http://bit.ly/ScienceMovies

::Follow us::

SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe
Cool Worlds Lab http://coolworlds.astro.columbia.edu
Twitter https://twitter.com/david_kipping
Instagram https://www.instagram.com/cool.worlds

THANKS FOR WATCHING!!

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This week a plot showing the global sea ice over time went viral due to shockingly low levels, smashing previous records. The plot was so weird that we decided to check out the data for ourselves and see if it was legit. Indeed, we can reproduce this alarming plot and provide some links and scripts for any of you who want to go ahead and try yourselves. Here we get into why we think these kinds of weird observations may become more common in the future.

::More about this Video::

► National Sea and Ice Data Center archive of sea ice extent data: https://nsidc.org/data/docs/noaa/g02135_seaice_index/
► My Mathematica script used to generate a confirming plot: https://github.com/davidkipping/seaiceextent
► Two of the first tweets publicizing the viral plot, Zach Labe (https://twitter.com/ZLabe/status/798913080168095744) and Eric Holthaus (https://twitter.com/EricHolthaus/status/800067428419940352).
► Wipneus archive of plots: https://sites.google.com/site/arctischepinguin/home/sea-ice-extent-area/grf
► Eric Holthaus blog article about the viral plot: http://tinyletter.com/sciencebyericholthaus/letters/today-in-weather-climate-sea-ice-tipping-point-edition-monday-november-21th
► Guardian article on record Arctic temperatures: https://www.theguardian.com/environment/2016/nov/22/extraordinarily-hot-arctic-temperatures-alarm-scientists
► CNN article on record Arctic temperatures: http://www.cnn.com/2016/11/18/world/sea-ice-arctic-antarctic-lows/
► Conrath at al. (1970), "The Infrared Interferometer Experiment on Nimbus 3": http://onlinelibrary.wiley.com/doi/10.1029/JC075i030p05831/abstract
► Gavin Schmidt explains "How we know that the Earth's climate is changing": https://youtu.be/mkT7IyUSjq0
► Video background music by Nick Caville: https://www.youtube.com/watch?v=iv2WSDMBRxA

::Playlists For Channel::

Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds
Cool Worlds Research ► http://bit.ly/CoolWorldsResearch
Guest Videos ► http://bit.ly/CoolWorldsGuests
Q&A Videos ►http://bit.ly/CoolWorldsQA
Science of TV/Film ► http://bit.ly/ScienceMovies

::Follow us::

SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe
Cool Worlds Lab http://coolworlds.astro.columbia.edu
Twitter https://twitter.com/david_kipping
Instagram https://www.instagram.com/cool.worlds

THANKS FOR WATCHING!!

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Thanks for all of your great comments and questions on our last two Proxima b videos! Here's a quick video covering some of the most common questions about Proxima b, such as: Is it tidally locked? Can we image it with Hubble? Can we take a photo with a flyby spaceship?

::More about this Video::

► "Discovery of a Planet around our Nearest Star: Proxima b" Cool Worlds video by Dr Guillem Anglada: https://youtu.be/59ClESB1AqA
► "Proxima b: Transits, Habitability & How to Get There!" Cool Worlds video by Prof Kipping: https://youtu.be/tcc635lNRwY
► Video of zonal winds on a tidally locked planet taken from Merlis & Schneider (2010), "Atmospheric dynamics of Earth-like tidally locked aquaplanets": https://arxiv.org/abs/1001.5117
► Leconte et al. (2015), "Asynchronous rotation of Earth-mass planets in the habitable zone of lower-mass stars": http://science.sciencemag.org/content/347/6222/632
► Kreidberg & Loeb (2016), "Prospects for Characterizing the Atmosphere of Proxima Centauri b": http://arxiv.org/abs/1608.07345
► Proxima b flyby video by the Planetary Habitability Laboratory, University of Puerto Rico at Arecibo: http://phl.upr.edu/press-releases/proxb
► Outro music by Taylor Davis: https://www.youtube.com/watch?v=dl9kI1yQKZk

::Playlists For Channel::

Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds
Cool Worlds Research ► http://bit.ly/CoolWorldsResearch
Guest Videos ► http://bit.ly/CoolWorldsGuests
Q&A Videos ► http://bit.ly/CoolWorldsQA
Science of TV/Film ► http://bit.ly/ScienceMovies

::Follow us::

SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe
Cool Worlds Lab http://coolworlds.astro.columbia.edu
Twitter https://twitter.com/david_kipping
Instagram https://www.instagram.com/cool.worlds

THANKS FOR WATCHING!!

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