Space is big—but could life out there be even bigger? Join us as we ask just how enormous alien life can get—and what it might look like.

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Cosmic Megafauna - Could Giant Alien Life Forms Exist?

Episode 727; June 22, 2025

Written, Produced & Narrated by: Isaac Arthur

Select imagery/video supplied by Getty Images

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Stellardrone, "Red Giant", "Billions and Billions"

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Space is big—but could life out there be even bigger? Join us as we ask just how enormous alien life can get—and what it might look like.

Watch my exclusive video Fishbowl Starships - Water As Shielding - https://nebula.tv/videos/isaacarthur-fishbowl-starships-water-as-shielding

Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur

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Use the link https://gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $36.

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Cosmic Megafauna - Could Giant Alien Life Forms Exist?

Episode 727; June 22, 2025

Written, Produced & Narrated by: Isaac Arthur

Select imagery/video supplied by Getty Images

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Stellardrone, "Red Giant", "Billions and Billions"

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Space colonization isn't about abandoning Earth—it's about transforming it. Discover how expanding into space can drive innovation, sustainability, and prosperity right here on the ground.

Watch my exclusive video Fishbowl Starships - Water As Shielding - https://nebula.tv/videos/isaacarthur-fishbowl-starships-water-as-shielding

Get 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=isaacarthur

Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.

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How Colonizing Space Benefits Earth: The Ground-Level Gains of a Galactic Future

Episode 726.1; June 22, 2025

Written, Produced & Narrated by: Isaac Arthur

Graphics: Bryan Versteeg, Jeremy Jozwik, Sergio Botero

Select imagery/video supplied by Getty Images 

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Space colonization isn't about abandoning Earth—it's about transforming it. Discover how expanding into space can drive innovation, sustainability, and prosperity right here on the ground.

Watch my exclusive video Fishbowl Starships - Water As Shielding - https://nebula.tv/videos/isaacarthur-fishbowl-starships-water-as-shielding

Get 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=isaacarthur

Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.

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How Colonizing Space Benefits Earth: The Ground-Level Gains of a Galactic Future

Episode 726.1; June 22, 2025

Written, Produced & Narrated by: Isaac Arthur

Graphics: Bryan Versteeg, Jeremy Jozwik, Sergio Botero

Select imagery/video supplied by Getty Images 

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Explore the real economics of building and operating a space elevator—from ship-launched ribbons to megaton climbers—and how this infrastructure could change the world.

Watch my exclusive video Fishbowl Starships - Water As Shielding - https://nebula.tv/videos/isaacarthur-fishbowl-starships-water-as-shielding

Get 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=isaacarthur

Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.

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Space Elevator Economics: Building And Operating A Superhighway To Space 

Episode 726; June 19, 2025

Written, Produced & Narrated by: Isaac Arthur

Edited by:

Adrian Nixon

Ludwig Luska

Peter Swan

Graphics:

Anthrofuturism

Atlantis Project

Katie Byrne

Phil Swan

Sergio Botero

Udo Schroeter

Select imagery/video supplied by Getty Images 

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector"

Aerium, "Deijocht"

Stellardrone, "Red Giant", "Billions and Billions"

Lombus, "Hydrogen Sonata", "Cosmic Soup"

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Explore the real economics of building and operating a space elevator—from ship-launched ribbons to megaton climbers—and how this infrastructure could change the world.

Watch my exclusive video Fishbowl Starships - Water As Shielding - https://nebula.tv/videos/isaacarthur-fishbowl-starships-water-as-shielding

Get 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=isaacarthur

Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.

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SFIA Discord Server: https://discord.gg/53GAShE

Credits:

Space Elevator Economics: Building And Operating A Superhighway To Space 

Episode 726; June 19, 2025

Written, Produced & Narrated by: Isaac Arthur

Edited by:

Adrian Nixon

Ludwig Luska

Peter Swan

Graphics:

Anthrofuturism

Atlantis Project

Katie Byrne

Phil Swan

Sergio Botero

Udo Schroeter

Select imagery/video supplied by Getty Images 

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector"

Aerium, "Deijocht"

Stellardrone, "Red Giant", "Billions and Billions"

Lombus, "Hydrogen Sonata", "Cosmic Soup"

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Everyone talks about terraforming Mars, but Venus might be the real prize. Discover the surprising ways we could cool, reshape, and colonize this hostile world.

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Credits:

How Hard Would It Be to Terraform Venus?

June 17, 2025; Episode 725.1

Written, Produced & Narrated by: Isaac Arthur

Graphics:

Ken York

Mafic Studios

Sergio Botero

Select imagery/video supplied by Getty Images

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Could we sculpt dead planets into living worlds? From artificial crusts and orbital mirrors to taming tectonics and engineering biospheres, this is your definitive guide to turning alien rocks into second Earths.

Watch my exclusive video Fishbowl Starships - Water As Shielding - https://nebula.tv/videos/isaacarthur-fishbowl-starships-water-as-shielding

Get 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=isaacarthur

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

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SFIA Discord Server: https://discord.gg/53GAShE

Credits:

Interstellar Travel: Can We Survive The Long Journey?

Episode 725; June 15, 2025

Written, Produced & Narrated by: Isaac Arthur

Graphics:

Jarred Eagley

Jeremy Jozwik

Ken York YD Visual

Mafic Studios

Sergio Botero

Select imagery/video supplied by Getty Images 

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector", "Oxygen Garden", "Wonder Cycle"

Kai Engel, "Endless Story About Sun and Moon"

Taras Harkavyi, "Alpha and..."

Dark Future, "Staring Through" pt1

Miguel Johnson. "The Commanders", "Far From Home"

Lombus, "Hydrogen Sonata", "Cosmic Soup"

Aerium, "Deijocht"

Stellardrone, "Red Giant", "Solar Eclipse", "Billions and Billions"

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Could we sculpt dead planets into living worlds? From artificial crusts and orbital mirrors to taming tectonics and engineering biospheres, this is your definitive guide to turning alien rocks into second Earths.

Watch my exclusive video Fishbowl Starships - Water As Shielding - https://nebula.tv/videos/isaacarthur-fishbowl-starships-water-as-shielding

Get 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=isaacarthur

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

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Credits:

Interstellar Travel: Can We Survive The Long Journey?

Episode 725; June 15, 2025

Written, Produced & Narrated by: Isaac Arthur

Graphics:

Jarred Eagley

Jeremy Jozwik

Ken York YD Visual

Mafic Studios

Sergio Botero

Select imagery/video supplied by Getty Images 

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector", "Oxygen Garden", "Wonder Cycle"

Kai Engel, "Endless Story About Sun and Moon"

Taras Harkavyi, "Alpha and..."

Dark Future, "Staring Through" pt1

Miguel Johnson. "The Commanders", "Far From Home"

Lombus, "Hydrogen Sonata", "Cosmic Soup"

Aerium, "Deijocht"

Stellardrone, "Red Giant", "Solar Eclipse", "Billions and Billions"

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Interstellar travel may one day take us to the stars, but surviving the journey could be the greatest challenge humanity has ever faced. In this episode, we explore the physical, psychological, and societal trials of a voyage that could span centuries—or forever.

Watch my exclusive video Fishbowl Starships - Water As Shielding - https://nebula.tv/videos/isaacarthur-fishbowl-starships-water-as-shielding

Get 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=isaacarthur

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

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SFIA Discord Server: https://discord.gg/53GAShE

Credits:

Interstellar Travel: Can We Survive The Long Journey?

Episode 724; June 12, 2025

Written, Produced & Narrated by: Isaac Arthur

Graphics:

Bryan Versteeg

Jarred Eagley

Jeremy Jozwik

Melanvois

Udo Schroeter

Select imagery/video supplied by Getty Images

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector", "Oxygen Garden", "Wonder Cycle"

Stellardrone, "Red Giant", "Billions and Billions"

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.