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We’ve Been Searching for Aliens the Wrong Way. That’s All About To Change

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We’ve been looking for messages from the stars ever since Frank Drake pointed the Green Bank radio telescope at Tau Ceti and Epsilon Eridany 65 years ago. He saw nothing that couldn’t be explained by natural causes. Nor have the much more extensive SETI surveys conducted since. So, maybe there are no alien signals to see. Or maybe we need to update how we search for them. We have, after all, learned an awful lot since 1960—both about the galaxy and about observing the galaxy.

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Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/space… the Entire Space Time Library Here: https://search.pbsspacetime.com/ Hosted by Matt O’Dowd Written by Matt O’Dowd Post Production by Leonardo Scholzer Directed by Andrew Kornhaber Associate Producer: Bahar Gholipour Executive Producer: Andrew Kornhaber Executive in Charge for PBS: Maribel Lopez Director of Programming for PBS: Gabrielle Ewing Assistant Director of Programming for PBS: Mike Martin Spacetime is a production of Kornhaber Brown for PBS Digital Studios. This program is produced by Kornhaber Brown, which is solely responsible for its content. © 2026 PBS. All rights reserved. End Credits Music by J.R.S. Schattenberg: / multidroideka Space Time Was Made Possible In Part By: Big Bang Alexander Tamas Filip Rolenec Juan Benet Kenneth See Mark Rosenthal Matthew Ocko Morgan Hough Peter Barrett Vinnie Falco Daniel Muzquiz Quasar Ethan Cohen Glenn Sugden Grace Biaelcki Justin Lloyd Mark Heising Rad Antonov Shaun Williams Stephen Wilcox Tristan Lucian Claudius Aurelius Tyacke Hypernova Alex Kern Ben Delo Chuck Zegar Dean Galvin Donal Botkin Gregory Forfa Jeff White John R. Slavik Massimiliano Pala PAUL C PEDERSEN Scott Gorlick Scott Gray Spencer Jones Vlad Shipulin Zachary Haberman Антон Кочков Gamma Ray Burst Alex Gan aaron pinto Almog Cohen Anthony Leon Arko Provo Mukherjee Ayden Miller Bradley Jenkins Bradley Ulis Brandon Lattin Brian Cook Chris Liao Christopher Wade Chuck Lukaszewski Collin Dutrow Craig Falls Craig Stonaha Dan Warren Daniel Donahue Daniel Jennings Darrell Stewart David Giltinan David Johnston Doyle Vann Eric Kiebler Eric Raschke Eric Schrenker Faraz Khan Frederic Simon gmmiddleton Harsh Khandhadia Isaac Suttell James Trimmier Jason Bowen Jeb Campbell Jeff Harris Jeremy Soller Jerry Thomas jim bartosh John Anderson John De Witt John Funai John H. Austin, Jr. Joseph Salomone Junaid Ali Kacper Cieśla Kane Holbrook Kent Durham Koen Wilde Kyle Atkinson Lori Ferris Marcelo Garcia Marion Lang Mark Daniel Cohen Mark Delagasse Matt Kaprocki Matt Quinn Matthew Johnson Michael Barton Michael Clark Michael Lev Michael Purcell Mikk Mihkel Nurges Nick Hoffenstoffer III Nicolas Katsantonis Onemind Param Saxena Paul Wood Rad Antonov Reuben Brewer Richard Steenbergen Robert DeChellis Ross Kennedy Ross Story Russell Moore SamSword Sandhya Devi Sean Owen Shane Calimlim SilentGnome Terje Vold Thomas Dougherty Todd J Lerner Tybie Fitzhugh Zac Sweers.

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New study suggests the brain applies different standards of beauty to paintings and architecture

A recent study published in the journal Psychology of Aesthetics, Creativity, and the Arts provides evidence that the human brain applies different standards of beauty depending on the type of visual art it evaluates. By comparing the visual properties of historical building facades and artistic paintings, scientists found that architects and painters weigh aesthetic features like symmetry and complexity quite differently.

When people look at an image, their appreciation of its beauty relies on several visual variables. These variables include properties such as color, balance, symmetry, complexity, and the relationship between the main subject and its background. Psychological theories of visual perception propose that humans tend to prefer sensory properties that the brain can process easily.

“I have been interested in the Valuation System of the brain, the network that learns and deploys values for decision-making,” said Norberto Grzywacz, a professor of psychology at Loyola University Chicago. “In particular, I have had interests in aesthetic values, which this system also processes. At some point, I asked myself whether aesthetic values in a sensory domain, for example vision, are universal or specific to different domains.”

Materials For Space Elevators — From Carbon Nanotubes To Graphene And Beyond…

From carbon nanotubes to multi-layered graphene, we explore the revolutionary materials that could turn space elevators from sci-fi dreams into real-world infrastructure. Discover how these supermaterials might let us weave ribbons to the stars.

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Credits:
Materials For Space Elevators — From Carbon Nanotubes To Graphene And Beyond…
Episode 741; July 24, 2025
Written, Produced & Narrated by: Isaac Arthur.
Edited by:
Adrian Nixon.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Chris Zabriskie, \

Antimatter Propulsion

Antimatter propulsion could be the fastest engine ever built. We explore how antimatter rockets work, their extreme energy density, and whether they could power humanity’s first true interstellar spacecraft.

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Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur–… SFIA Merchandise: https://isaac-arthur-shop.fourthwall… 🌐 Visit our Website: http://www.isaacarthur.net ❤️ Support us on Patreon: / isaacarthur ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-a… 👥 Facebook Group: / 1,583,992,725,237,264 📣 Reddit Community: / isaacarthur 🐦 Follow on Twitter / X: / isaac_a_arthur 💬 SFIA Discord Server: / discord Credits: Antimatter Propulsion — Extended Edition Written, Produced & Narrated by: Isaac Arthur Edited by: Thomas Owens & Merv Johnson II Graphics: Jeremy Jozwik, Ken York YD Visual, Sergio Botero Select imagery/video supplied by Getty Images Music Courtesy of Epidemic Sound http://epidemicsound.com/creator Markus Junnikkala, “A Fleet Behind the Moon” Phase Shift, “Forest Night” Kai Engel, “Endless Story About Sun and Moon” Chris Zabriskie, “Unfoldment, Revealment”, “A New Day in a New Sector” Taras Harkavyi, “Alpha and…” Stellardrone, “Red Giant”, “Billions and Billions”

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Credits:
Antimatter Propulsion — Extended Edition.
Written, Produced & Narrated by: Isaac Arthur.
Edited by: Thomas Owens & Merv Johnson II
Graphics: Jeremy Jozwik, Ken York YD Visual, Sergio Botero.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Markus Junnikkala, \

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