Science & Futurism with Isaac Arthur

Latest Episodes:

Space Habitats: The Strangest Worlds We Could Build (Narration Only) Aug 15, 2026

Show notes

Build a world small enough to circle in a day—or vast enough to house a galaxy. This grand tour explores the strangest space habitats possible under known physics.

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

Credits:

Space Habitats: The Strangest Worlds We Could Build

Editors:

Daniel McNamara, Darius Said, Jason Burbank, Keith Blockus, Ken York, Matthew Acker, S. Kopperud, Tim Liusko, Yamagishi

Graphics from:

Apogii.uk, Bryan Versteeg, Cameron Scott, Fishy Tree, Jakub Grygier, Jarred Eagley, Jeremy Jozwik, Justin Dixon, Katie Byrne, Ken York (YD Visual), Sergio Botero, Steve Bowers, Sam McNamara, Udo Schroeter

Select imagery/video supplied by Getty Images

Music Courtesy of:

Aerium, Chris Zabriskie, Denny Schneidemesser, Evan King, Kai Engel, Lombus, Markus Junnikkala, Stellardrone, Taras Harkavyi, and Music by Epidemic Sound: http://nebula.tv/epidemic

Stellardrone & Chris Zabriskie

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

Space Habitats: The Strangest Worlds We Could Build Aug 15, 2026

Show notes

Build a world small enough to circle in a day—or vast enough to house a galaxy. This grand tour explores the strangest space habitats possible under known physics.

Get a 50% Match for your donation - https://www.farmkind.giving/isaac

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/

🌐 Visit our Website: http://www.isaacarthur.net

❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur

⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/

📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/

🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur

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

Credits:

Space Habitats: The Strangest Worlds We Could Build

Editors:

Daniel McNamara, Darius Said, Jason Burbank, Keith Blockus, Ken York, Matthew Acker, S. Kopperud, Tim Liusko, Yamagishi

Graphics from:

Select imagery/video supplied by Getty Images

Music Courtesy of:

Aerium, Chris Zabriskie, Denny Schneidemesser, Evan King, Kai Engel, Lombus, Markus Junnikkala, Stellardrone, Taras Harkavyi, and Music by Epidemic Sound: http://nebula.tv/epidemic

Stellardrone & Chris Zabriskie

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

Life in a Relativistic Starship (Narration Only) Aug 13, 2026

Show notes

Aboard a relativistic starship, time is cargo: gamma-10 cruise, decades slipping by outside, lethal dust grains, beam routes, antimatter, ramjets, and the strange culture of crews who trade history for the stars.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur

Checkout Otusider Aliens and our Alien Life Collection: https://nebula.tv/isaacarthur/alien-life-collection

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/

🌐 Visit our Website: http://www.isaacarthur.net

❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur

⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

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🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur

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

Credits:

Life in a Relativistic Starship

Editors: Donagh Broderick & Merv Johnson II

Written, Produced & Narrated by: Isaac Arthur

Music by Epidemic Sound: http://nebula.tv/epidemic

Stellardrone & Chris Zabriskie

Select imagery/video supplied by Getty Images

Chapters

0:00 Intro

7:02 Life Aboard a Relativistic Starship

11:11 Relativity Without the Chalkboard

14:08 The Propulsion Wall

18:35 The Engines That Can Actually Go Relativistic

25:14 The Hazards of Going Too Fast

30:17 Beyond Reality

31:08 How Fast Is Fast Enough?

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

Life in a Relativistic Starship Aug 13, 2026

Show notes

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur

Checkout Otusider Aliens and our Alien Life Collection: https://nebula.tv/isaacarthur/alien-life-collection

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/

🌐 Visit our Website: http://www.isaacarthur.net

❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur

⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/

📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/

🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur

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

Credits:

Life in a Relativistic Starship

Editors: Donagh Broderick & Merv Johnson II

Written, Produced & Narrated by: Isaac Arthur

Music by Epidemic Sound: http://nebula.tv/epidemic

Stellardrone & Chris Zabriskie

Select imagery/video supplied by Getty Images

Chapters

0:00 Intro

7:02 Life Aboard a Relativistic Starship

11:11 Relativity Without the Chalkboard

14:08 The Propulsion Wall

18:35 The Engines That Can Actually Go Relativistic

25:14 The Hazards of Going Too Fast

30:17 Beyond Reality

31:08 How Fast Is Fast Enough?

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

Are We Living in a Simulation? A Modern Look at the Simulation Argument (Narration Only) Aug 09, 2026

Show notes

Are we living in a simulation, or are we becoming the simulators? From AI worlds to digital immortality and the Fermi Paradox, we explore reality’s weirdest possibility.

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/

🌐 Visit our Website: http://www.isaacarthur.net

❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur

⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/

📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/

🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur

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

Credits:

Are We Living in a Simulation? A Modern Look at the Simulation Argument

Written, Produced & Narrated by: Isaac Arthur

Music Courtesy of Stellardrone & Chris Zabriskie

Select imagery/video supplied by Getty Images

Chapters

0:00 Intro

5:48 The Simulation Argument

13:19 Simulated Futures

13:53 Motives for Making Simulated Worlds

26:46 Can We Tell?

34:01 Simulations and the Fermi Paradox

37:32 Does It Matter?

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

Are We Living in a Simulation? A Modern Look at the Simulation Argument Aug 09, 2026

Show notes

Are we living in a simulation, or are we becoming the simulators? From AI worlds to digital immortality and the Fermi Paradox, we explore reality’s weirdest possibility.

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/

🌐 Visit our Website: http://www.isaacarthur.net

❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur

⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/

📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/

🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur

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

Credits:

Are We Living in a Simulation? A Modern Look at the Simulation Argument

Written, Produced & Narrated by: Isaac Arthur

Music Courtesy of Stellardrone & Chris Zabriskie

Select imagery/video supplied by Getty Images

Chapters

0:00 Intro

5:48 The Simulation Argument

13:19 Simulated Futures

13:53 Motives for Making Simulated Worlds

26:46 Can We Tell?

34:01 Simulations and the Fermi Paradox

37:32 Does It Matter?

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

The First Martian Cities: Planning Habitats (Narration Only) Aug 06, 2026

Show notes

Mars won’t get cities because it becomes easy to live there. It gets cities because people stay. We explore how the first fragile outposts become homes, economies, neighborhoods, and civilization.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur

Check out TierZoo Remastered: https://nebula.tv/tierzoo/tierzoo-remastered?ref=isaacarthur

Ares Inception on Steam: https://store.steampowered.com/app/4512810/Ares_Inception/

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/

🌐 Visit our Website: http://www.isaacarthur.net

❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur

⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/

📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/

🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur

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

Credits:

The First Martian Cities: Planning Habitats

Editors: Phil Leichauer

Graphics: Bryan Versteeg

Written, Produced & Narrated by: Isaac Arthur

Music by Epidemic Sound: http://nebula.tv/epidemic

Stellardrone & Chris Zabriskie

Chapters

0:00 Intro

5:16 Fluorine in the Toolbox

10:14 The Halogen Sea

17:35 Rocket-Engine Biology & Fluorine Dragons

23:11 Worlds, Weather, Detection, and Civilization

28:16 TierZoo

29:24 Life Under Armed Guard

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

The First Martian Cities: Planning Habitats Aug 06, 2026

Show notes

Mars won’t get cities because it becomes easy to live there. It gets cities because people stay. We explore how the first fragile outposts become homes, economies, neighborhoods, and civilization.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur

Check out TierZoo Remastered: https://nebula.tv/tierzoo/tierzoo-remastered?ref=isaacarthur

Ares Inception on Steam: https://store.steampowered.com/app/4512810/Ares_Inception/

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/

🌐 Visit our Website: http://www.isaacarthur.net

❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur

⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/

📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/

🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur

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

Credits:

The First Martian Cities: Planning Habitats

Editors: Phil Leichauer

Graphics: Bryan Versteeg

Written, Produced & Narrated by: Isaac Arthur

Music by Epidemic Sound: http://nebula.tv/epidemic

Stellardrone & Chris Zabriskie

Chapters

0:00 Intro

5:16 Fluorine in the Toolbox

10:14 The Halogen Sea

17:35 Rocket-Engine Biology & Fluorine Dragons

23:11 Worlds, Weather, Detection, and Civilization

28:16 TierZoo

29:24 Life Under Armed Guard

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

Fluorine Lifeforms – Creatures of the Halogen Seas Aug 02, 2026

Show notes

Could life survive in oceans that eat glass and treat water as poison? Explore fluorine-rich biology, hydrogen fluoride seas, and alien creatures whose metabolisms resemble carefully contained rocket engines.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur

Check out TierZoo Remastered: https://nebula.tv/tierzoo/tierzoo-remastered?ref=isaacarthur

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/

🌐 Visit our Website: http://www.isaacarthur.net

❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur

⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/

📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/

🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur

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

Credits:

Fluorine Lifeforms – Creatures of the Halogen Seas

Written, Produced & Narrated by: Isaac Arthur

Music by Epidemic Sound: http://nebula.tv/epidemic

Chris Zabriskie

Select imagery/video supplied by Getty Images

Chapters

0:00 Intro

5:16 Fluorine in the Toolbox

10:14 The Halogen Sea

17:35 Rocket-Engine Biology & Fluorine Dragons

23:11 Worlds, Weather, Detection, and Civilization

28:16 TierZoo

29:24 Life Under Armed Guard

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

Fluorine Lifeforms – Creatures of the Halogen Seas (Narration Only) Aug 02, 2026

Show notes

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur

Check out TierZoo Remastered: https://nebula.tv/tierzoo/tierzoo-remastered?ref=isaacarthur

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/

🌐 Visit our Website: http://www.isaacarthur.net

❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur

⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur

👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/

📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/

🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur

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

Credits:

Fluorine Lifeforms – Creatures of the Halogen Seas

Written, Produced & Narrated by: Isaac Arthur

Music by Epidemic Sound: http://nebula.tv/epidemic

Chris Zabriskie

Select imagery/video supplied by Getty Images

Chapters

0:00 Intro

5:16 Fluorine in the Toolbox

10:14 The Halogen Sea

17:35 Rocket-Engine Biology & Fluorine Dragons

23:11 Worlds, Weather, Detection, and Civilization

28:16 TierZoo

29:24 Life Under Armed Guard

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

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