Cool Worlds

Our Solar System is Mixing with Others

335K views · 13d ago · 19:52

Written & presented by David Kipping. Support our research THANK-YOU to A. Davenport, E. Garland, C. Kennedy, B. Reese, J. Bryant, B. Devermont, A. Huch, V. Popovski, G. Belsak, D. Stewart, C. Fitzsimmons, L. Cunningham, T. Donkin, D. Hoffman, J. Rockett, J. Murphy, N. De Haan, P. Borisoff, M. Browne, P. Stevenson, R. Provost, N. Corwin, G. Briden, D. Lee, J. Sweeney, P. Johnston, The Queen Road Foundation Inc, L. Deacon, C. Hansen, C. Seay, B. Cartmell, B. Ross-Lee, J.

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How Cold Can You Go? | 50x50 Science

104K views · 1mo ago · 13:02

In the heart of New York City, physicists are making exotic states of quantum matter - states that have possibly never before occurred in the Universe. Today, as part of the 50x50 Science Across America series, Cool Worlds visits the coolest place of them all to see how this happens...

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Did We Finally Detect Dark Matter Directly?

582K views · 1mo ago · 18:40

Go to for a free sample pack with any purchase! There's been a lot of news about a possible detection of a dark matter particle - did we finally just crack one of the grandest challenges in modern science?! Today, we break down what dark matter is, how the search experiment works, and what was found.

Topics: Evidence for Dark Matter · WIMPs · LZ Experiment · LMNT · What about earlier efforts? · Final thoughts

🎵 Mentioned music: Track on open.spotify.com

AI Has Poisoned Everything

283K views · 1mo ago · 18:32

A video essay and opinion piece on what worries me most about AI. Like so many of the big issues in our lives, it's not a black-and-white good-vs-evil dichotomy. Although it's certainly a powerful and amazing tool in many use cases, something I often use myself with great wonder (e.g. we often use AI to upscale grainy clips), I fear its irresponsible (and perhaps unavoidable) exploitation may push us into an intellectual dark age.

🎵 Mentioned music: Track on open.spotify.com

The Genius Who Thought Aliens Lived in the Sun

211K views · 2mo ago · 17:16

Upgrade your online protection with an all-in-one security app! It’s risk free with Nord’s 30 day money-back guarantee! In 1781, William Herschel discovered Uranus. He became the most famous astronomer of his day, and a legend in the annals of history. Yet he also had some very strange beliefs about aliens. So strange it begs the question - how?!

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Why Finding Aliens Could Doom Humanity

309K views · 3mo ago · 26:37

The "Great Filter" is a pivotal idea in astrobiology. It may very well explain the Fermi Paradox. Today we explore what it is, some candidates for it's cause, and the shocking consequences it implies with respect to our future detections.

Topics: It Wasnt Mine To Begin With - Hill · Dust and Light - Hill · World of Wonder - Hill · Cylinder Four - Chris Zabriskie · First and Last - Hill · Don’t Think - Hill

🎵 Mentioned music: Track on open.spotify.com

Did We Just Find the First "Exomoon"?

40K views · 3mo ago · 2:59

Atmosphere Detected for an "Earth-like" Exoplanet?

69K views · 3mo ago · 1:58

Either Possibility is Terrifying...

21K views · 5mo ago · 1:11

▶️ Mentioned videos: Full video

Why Technological Civilizations Might Be Insanely Rare

278K views · 5mo ago · 18:03

Today's video explores the most terrifying calculation I've ever done, one that comes with some deeply unsettling implications for the Universe in which we live... Support our research THANK-YOU to S. Shardool, M. Seay, M. McMillan, M. Popovski, M. Singh, M. Elliott, M. Donkin, M. Zajonc, M. Czirr, M. Williams, M. Daughaday, M. Muriuki, M. Cartmell, M. Ford, M. Devermont, M. Hedlund, M. Patterson, M. Murphy, M. Bassnett, M. Lovely, M. Schiff, M. Bylinsky, C. Fitzgerald, M.

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📄 Mentioned papers: The Cosmological Hart-Tipler Conjecture

We're Finally Unlocking the "Cosmic Shoreline"

226K views · 5mo ago · 18:02

Head to an exoplanet seminar or conference and you'll constantly hear astronomers talking about "the Cosmic Shoreline". But - what the heck is that? Why is it so important? And why is JWST dedicating a huge amount of telescope time to studying it?

Topics: Falls - Life In Binary · Scott Buckley - Dragon’s Lullabye · Hill - World of Wonder · Sid Acharya - Searching for Answers · Atlas - Waking Up · Chris Zabriskie - The Sun is Scheduled to Come Out Tomorrow

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Why We Might NEVER Detect Alien Life

194K views · 6mo ago · 25:15

We've all the heard headlines of scientists claiming evidence of alien life, but time and time again it turns up bust. Why does this keep happening? And will we ever be able to break out of this cycle? Our new research paper tackles this profound question, and outlines a possible way out...

Topics: Falls - Life in Binary · Sid Acharya - Searching for Answers · Atlas - Waking Up · Brad Hill - World of Wonder · Chris Zabriskie - Music from Neptune Flux 01 · Scott Buckley Dragon’s Lullabye

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📄 Mentioned papers: arXiv 2605.02969

My Thoughts on Artemis II

90K views · 7mo ago · 7:19

An amazing experience I had to share with you all... Support our research THANK-YOU to M. Daniluk, M. Cartmell, E. Garland, M. Saint, M. Nimmerjahn, M. Daughaday, M. Morrow, M. Herman, M. Vystoropskyi, R. Borbidge, M. Williams, M. Lee, M. Edris, W. Ruf, M. Larter, M. Stewart, M. Schreiner, M. Schiff, M. Morrison, M. Brownlee, M. Canning, M. Smith, M. Borisoff, M. Huch, M. Corwin, M. Lee, M. Patterson, M. Brooks, M. Bottaccini, M. Williams, M. Johnston, M. Zajonc, M.

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New Discoveries on Wormholes Are Changing Everything

334K views · 7mo ago · 26:59

How do wormholes work? Are they actually possible? How could we make one? Join us today for a deep dive into the wormhole... Support our research THANK-YOU to M. Howard, M. Metts, M. Provost, S. Shardool, M. Bueche, M. Williams, M. Morrow, R. Borbidge, M. Everest, M. Vystoropskyi, M. Bryant, M. Nimmerjahn, M. Schreiner, M. Canning, M. Stewart, M. Cartmell, M. Brooks, M. Smith, E. Garland, M. Borisoff, M. Danielson, M. Adler, M. Sanford, M. Smith, M. Larter, M. Devermont, M.

Topics: Scott Buckley - Incantation · Scott Buckley - Never Dying · Scott Buckley - The Long Dark · Brad Hill - World of Wonder · Scott Buckley - Dragon’s Lullabye · Brad Hill - The Mysterious

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Stop the Dumbest Mega Constellation

77K views · 8mo ago · 2:08

For more info, including all these links, head to STEP 1: Sign and share the open letter here (near the bottom) STEP 2: Sign the petition STEP 3: Submit an FCC comment. a) Template letter is at b) Create FCC account at c) Follow instructions at

Humanity is Feral

56K views · 9mo ago · 2:04

The Dawn of Immortal Space Telescopes

116K views · 9mo ago · 14:05

Today we discuss how three emerging technologies are poised to transform space telescopes forever. Support our research THANK-YOU to D. Smith, 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, J. Rockett, M. Sanford, T. Donkin, A. Schoen, K. Dabrowski, J. Armstrong, B. Smith, J. Bergman, C. Macdonald, M. Hedlund, N. Corwin, K. Howard, L. Deacon, G.

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Our First Contact with Aliens Will Be Their Last Words

1.4M views · 11mo ago · 15:57

What is the most realistic way we'll detect an alien civilization? If the history of science and astronomy is any guide, there is a clear answer: The Eschatian Hypothesis. Written & presented by David Kipping Support our research

Topics: Hill - Fragile Beings · Hill - Stratus · Chris Zabriskie - Cylinder Four · Hill - To Accept the Partings That Must Come · Joachim Heinrich - Y · History

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📄 Mentioned papers: The Eschatian Hypothesis

JWST Surveyed a Jupiter-like Exoplanet for Exomoons: Results

174K views · 11mo ago · 29:34

The day has finally come! Today we share our results using JWST to look for exomoon around Kepler-167e... buckle in... Written & presented by David Kipping Support our research THANK-YOU to D. Smith, 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, J. Rockett, M. Sanford, T. Donkin, A. Schoen, K. Dabrowski, J. Armstrong, B. Smith, J. Bergman, C.

Topics: Sid Acharya - Stories from the Sky · Hill - There Is but One Good · Falls - Life in Binary · Chris Zabriskie - tories About the World That Once Was · Kyle Preston - An Ocean of Quiet Confession · Chris Zabriskie - We Were Never Meant to Live Here

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📄 Mentioned papers: A JWST Transit of a Jupiter Analog: II. A Search for Exomoons · A JWST Transit of a Jupiter Analog I: Constraints on the Oblateness of Kepler-167e

Why We Might Live in a "Barely Habitable" Universe

296K views · 1y ago · 16:10

Intelligent design purports that the Universe was made by a creator - God. One of the arguments often invoked to make this case is that the physical constants of the Universe are (apparently) finely tuned to permit life. But cosmologist Denis Sciama presented a thought-provoking analysis of this line of thought and suggested it might be possible to even test intelligent design. Join us today as we explore this fascinating concept.

Topics: Hill - A Thin Place [ · Hill - Arctic Warmth [ · Hill - World of Wonder [ · Hill - Conception [ · Hill - Mourning Wakes [ · Fine-Tuning

🎵 Mentioned music: Track on open.spotify.com · 0:00 Hill - A Thin Place

📄 Mentioned papers: Life in a random universe: Sciama · Sciama

📰 Mentioned news: It Takes 26 Fundamental Constants To Give Us Our Universe, But They Still Don

Carl Sagan on the Need for Added Skepticism

39K views · 1y ago · 1:59

Guest: PBS Charlie Rose

Carl Sagan from his final interview with PBS Charlie Rose in 1994

Mars Rover Snaps 3I/ATLAS?!

102K views · 1y ago · 2:54

A quick short exploring some of the latest 3I/ATLAS gossip... Avi's blog post is here NASA images are here and here

📰 Mentioned news: Avi's blog post is

Why Intelligent Life May Be Impossible Around Most Stars

610K views · 1y ago · 21:04

New research from the Cool Worlds Lab leads a shocking conclusion - most stars might be incapable of developing intelligent life.... Support our research PAPER THANK-YOU to D. Smith, 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, J. Rockett, M. Sanford, T. Donkin, A. Schoen, K. Dabrowski, J. Armstrong, B. Smith, J. Bergman, C. Macdonald, M.

Topics: Ending: Agrippa - Mikko Tarmia · Atlas - Waking Up · Hill - World of Wonder · Hill - Fragile Beings · Hill - A Flickering Start · Hill - A Thin Place

📄 Mentioned papers: arXiv 2510.01215

📰 Mentioned news: Article on pablocarlosbudassi.com

Why Faster-Than-Light Travel Leads to Time Paradoxes

140K views · 1y ago · 2:35

▶️ Mentioned videos: the full video