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A colossal explosion in the sky, unleashing energy hundreds of times greater than the Hiroshima bomb. A blinding flash nearly as bright as the sun. Shockwaves powerful enough to flatten everything for miles.

It may sound apocalyptic, but a newly detected asteroid nearly the size of a football field now has a greater than one percent chance of colliding with Earth in about eight years.

Such an impact has the potential for city-level devastation, depending on where it strikes.

An exploration of the idea that all true technological intelligence is inherently artificial in a sense, including the human brain. This has major implications on the Fermi Paradox and may be one of the strongest solutions of why when we search the heavens, we do not see evidence of alien life.

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You can stop a clock from ticking, but it’s a lot harder to figure out how to stop humanity’s relentless march toward self-annihilation.

The keepers of the metaphorical Doomsday Clock have now determined we are closer than ever to catastrophe, and they have moved the second hand forward by one tick.

It now sits 89 seconds away from midnight, aka ‘Doomsday’

Amid the swirling vastness of galaxies, each a cosmic city of stars and planets, the silence raises a compelling question: could the very nature of galaxies themselves hold the key to why intelligent life remains unseen?

Watch my exclusive video The Fermi Paradox: Air https://nebula.tv/videos/isaacarthur–… Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa… Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30. Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon: / isaacarthur Support us on Subscribestar: https://www.subscribestar.com/isaac-a… Facebook Group: / 1,583,992,725,237,264 Reddit: / isaacarthur Twitter: / isaac_a_arthur on Twitter and RT our future content. SFIA Discord Server: / discord Credits: The Fermi Paradox: Galactic Great Filters Episode 484; January 30, 2025 Written, Produced & Narrated by: Isaac Arthur Select imagery/video supplied by Getty Images Music Courtesy of Epidemic Sound http://epidemicsound.com/creator Phase Shift, “Forest Night” Chris Zabriskie, “Unfoldment, Revealment” Stellardrone, “Billions and Billions“
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Credits:
The Fermi Paradox: Galactic Great Filters.
Episode 484; January 30, 2025
Written, Produced & Narrated by: Isaac Arthur.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Phase Shift, \

The data inscribed into the crystal is carefully annotated with universal elements like hydrogen, oxygen, carbon, and nitrogen, as well as the four DNA bases—adenine, cytosine, guanine, and thymine—that make up the genetic code. Additionally, the molecular structure of DNA and the arrangement of genes within chromosomes are depicted, offering clear instructions on how to interpret the genetic information stored within.

However, it is important to note that the 5D memory crystals require a highly specialized skill set and advanced equipment to inscribe and read the data stored within the crystals, so those looking to re-establish the human race after an extinction event may have to refer to more traditional means.

The crystal, made from fused quartz, is one of the most chemically and thermally resilient materials known on Earth, and can endure temperatures as high as 1000°C, resist direct impact forces up to 10 tons per square centimeter, and is unaffected by long-term exposure to cosmic radiation. The longevity and storage capacity of the 5D memory crystal earned it a Guinness World Record in 2014 for being the most durable data storage material ever created.

Part II of a collaboration with Isaac Arthur on the subject of uplifting, the concept of increasing an animal or alien species’ intelligence. Further, we explore the concept of Downshifting, the idea of making deliberately making something less intelligent.

Watch Part 1: • Uplifting Animal & Aliens, Part 1 of 2

Isaac’s video on rare intelligence:

• fermi paradox great filters: rare int…

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Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/.

A new interview with Dr. Abraham “Avi” Loeb from Harvard and update on the subject of Oumuamua, the Fermi Paradox, interstellar objects. Life around red dwarf stars, solar flares, and the search for intelligent alien civilizations. This is part two of a two part interview with Dr. Loeb. Have Aliens Found Us? A Harvard Astronomer on the Mysterious Interstellar Object ‘Oumuamua : https://www.newyorker.com/news/the-ne… Strange Facts about the Interstellar Visitor Oumuamua: https://www.cfa.harvard.edu/~loeb/SL.pdf “COULD SOLAR RADIATION PRESSURE EXPLAIN ‘OUMUAMUA’S PECULIAR ACCELERATION?”, Bialy and Loeb, 2018 https://arxiv.org/pdf/1810.11490.pdf Is Oumuamua A Light Saul? Featuring Dr. Avi Loeb: • Is ‘Oumuamua a Light Sail? Featuring… Why The Universe May Be Full Of Alien Civilizations Featuring Dr. Avi Loeb: • Why The Universe May Be Full Of Alien… Website: https://www.eventhorizonshow.com/ You can now support us on Patreon! / eventhorizonshow Follow us on Twitter! / jmgeventhorizon Follow us on Instagram! / jmgeventhorizon.

We often speculate that the reason we can’t hear aliens civilizations is because our SETI efforts (the Search for Extraterrestrial Intelligence) relies on radio and telescopes to weak to hear them. But how plausible is that? and what would it tell us about our own future?

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Support us on Subscribestar: https://www.subscribestar.com/isaac-a… Group: / 1,583,992,725,237,264 Reddit: / isaacarthur Twitter: / isaac_a_arthur on Twitter and RT our future content. SFIA Discord Server: / discord Credits: The Fermi Paradox: Whispers in the Night Episode 230; Mar 19, 2020 Writers: Isaac Arthur Editors: Jerry Guern Produced & Narrated by: Isaac Arthur Cover Art: Jakub Grygier https://www.artstation.com/jakub_grygier Graphics: Jeremy Jozwik https://www.artstation.com/zeuxis_of_… Ken York / ydvisual Sergio Botero https://www.artstation.com/sboterod?f… Music: Lombus, “Cosmic Soup” https://lombus.bandcamp.com Aerium, “Waters of Atlantis” & “Fifth Star of Aldebaran” / @officialaerium Markus Junnikkala, “A Memory of Earth” https://www.markusjunnikkala.com/
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Credits:
The Fermi Paradox: Whispers in the Night.
Episode 230; Mar 19, 2020

Writers:
Isaac Arthur.

Editors:
Jerry Guern.

Produced & Narrated by: