A new industrial revolution is coming—not on Earth, but above it. This episode delves into how orbital shipyards will produce everything from shuttles to megastructures, changing how we explore and inhabit space.

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

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Credits:

Orbital Shipyards: Building Fleets in Space

Episode 722; June 5, 2025; Nebula Exclusive

Written, Produced, & Narrated by: Isaac Arthur

Graphics:

Anthrofuturism

Bryan Versteeg

Fishy Tree

Jeremy Jozwik

Melanovis

Sergio Botero

SpaceResourcesCGI

Udo Schroeter

Select imagery/video supplied by Getty Images

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

Phase Shift, "Forest Night"

Kai Engel, "Endless Story of Sun and Moon"

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

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

Chapters

0:00 Intro

0:15 Why Build in Orbit?

1:29 The Gravity Well Problem

3:22 Material Sourcing – The Importance of ISRU

5:44 Early Orbital Shipyards – Existing & Near-Future Projects

6:37 Lessons from Space Stations & Prototypes

8:22 Port George & Linus Scrapyard – Revisiting Fictional Shipyards

13:08 Infrastructure & Logistics of Orbital Shipyards

23:39 Constructing Different Types of Ships

31:58 Challenges of Large-Scale Shipbuilding

34:10 Maintenance, Repairs, and Refits – Sustaining a Spacefaring Fleet

39:25 Salvage and Recycling

40:37 The Future of Orbital Shipyards – Expanding Beyond Earth

43:03 The Rise of Megastructure Shipyards

44:29 Privatization and the Spacefaring Economy

46:12 Shipyards as Strategic Military and Political Assets

47:54 The Role of AI, Automation, and Post-Human Workforces

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

A new industrial revolution is coming—not on Earth, but above it. This episode delves into how orbital shipyards will produce everything from shuttles to megastructures, changing how we explore and inhabit space.

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

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/

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Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.

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

Credits:

Orbital Shipyards: Building Fleets in Space

Episode 722; June 5, 2025; Nebula Exclusive

Written, Produced, & Narrated by: Isaac Arthur

Graphics:

Anthrofuturism

Bryan Versteeg

Fishy Tree

Jeremy Jozwik

Melanovis

Sergio Botero

SpaceResourcesCGI

Udo Schroeter

Select imagery/video supplied by Getty Images

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

Phase Shift, "Forest Night"

Kai Engel, "Endless Story of Sun and Moon"

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

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

Chapters

0:00 Intro

0:15 Why Build in Orbit?

1:29 The Gravity Well Problem

3:22 Material Sourcing – The Importance of ISRU

5:44 Early Orbital Shipyards – Existing & Near-Future Projects

6:37 Lessons from Space Stations & Prototypes

8:22 Port George & Linus Scrapyard – Revisiting Fictional Shipyards

13:08 Infrastructure & Logistics of Orbital Shipyards

23:39 Constructing Different Types of Ships

31:58 Challenges of Large-Scale Shipbuilding

34:10 Maintenance, Repairs, and Refits – Sustaining a Spacefaring Fleet

39:25 Salvage and Recycling

40:37 The Future of Orbital Shipyards – Expanding Beyond Earth

43:03 The Rise of Megastructure Shipyards

44:29 Privatization and the Spacefaring Economy

46:12 Shipyards as Strategic Military and Political Assets

47:54 The Role of AI, Automation, and Post-Human Workforces

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

The Fermi Paradox asks why, in a vast and ancient universe, we see no signs of alien life. In this episode, we explore five explanations that make sense—and seven popular ones that, despite sounding good, fall flat under closer scrutiny.

Join this channel to get access to perks:

https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g/join

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

Join Nebula: https://go.nebula.tv/isaacarthur

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/

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Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.

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

Credits:

5 Fermi Paradox Explanations I Love, 7 That Fall Flat

Episode 502 / 721; May 31, 2025

Written, Produced & Narrated by: Isaac Arthur

Graphics: Ken York YD Visual

Select imagery/video supplied by Getty Images

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

0:00 Intro

1:11 Space Is Too Big

4:46 Rare Earth

6:35 Aliens Signals Just Can’t Be Heard

10:09 Humans Are Boring

11:36 Dark Forest Theory

14:14 Interdiction Bubble Civilizations

16:49 Hermit Hypothesis

19:18 Aestivation Hypothesis and Extragalactic Migration

21:10 Transcendance, Ascension, and Extra-Universe Migration

22:33 Infinite Miniaturization

23:33 Berserkers & Zombie AI

24:53 Aliens Common But Unrecognizable

26:08 Simulation Hypothesis

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

The Fermi Paradox asks why, in a vast and ancient universe, we see no signs of alien life. In this episode, we explore five explanations that make sense—and seven popular ones that, despite sounding good, fall flat under closer scrutiny.

Join this channel to get access to perks:

https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g/join

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

Join Nebula: https://go.nebula.tv/isaacarthur

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: https://www.reddit.com/r/IsaacArthur/

Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.

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

Credits:

5 Fermi Paradox Explanations I Love, 7 That Fall Flat

Episode 502 / 721; May 31, 2025

Written, Produced & Narrated by: Isaac Arthur

Graphics: Ken York YD Visual

Select imagery/video supplied by Getty Images

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

0:00 Intro

1:11 Space Is Too Big

4:46 Rare Earth

6:35 Aliens Signals Just Can’t Be Heard

10:09 Humans Are Boring

11:36 Dark Forest Theory

14:14 Interdiction Bubble Civilizations

16:49 Hermit Hypothesis

19:18 Aestivation Hypothesis and Extragalactic Migration

21:10 Transcendance, Ascension, and Extra-Universe Migration

22:33 Infinite Miniaturization

23:33 Berserkers & Zombie AI

24:53 Aliens Common But Unrecognizable

26:08 Simulation Hypothesis

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

From trench-busting stormtroopers to galaxy-spanning clone legions, we explore the evolution of elite soldiers and how sci-fi reimagines the future of warfare.

Watch my exclusive video Antimatter Propulsion: Harnessing the Power of Annihilation - https://nebula.tv/videos/isaacarthur-antimatter-propulsion-harnessing-the-power-of-annihilation

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

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/

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Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.

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

Credits:

Stormtroopers: Elite Warriors and the Evolution of Future Combat

Episode 501; May 29, 2025

Written, Produced & Narrated by: Isaac Arthur

Editors: Donagh Broderick

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"

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

Stellardrone, "Red Giant"

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

From trench-busting stormtroopers to galaxy-spanning clone legions, we explore the evolution of elite soldiers and how sci-fi reimagines the future of warfare.

Watch my exclusive video Antimatter Propulsion: Harnessing the Power of Annihilation - https://nebula.tv/videos/isaacarthur-antimatter-propulsion-harnessing-the-power-of-annihilation

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

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/

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Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.

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

Credits:

Stormtroopers: Elite Warriors and the Evolution of Future Combat

Episode 501; May 29, 2025

Written, Produced & Narrated by: Isaac Arthur

Editors: Donagh Broderick

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"

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

Stellardrone, "Red Giant"

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

From Clarke’s Sentinel to deep-space defense systems, this episode dives into the idea of machine monitors—guardians of planets, civilizations, and secrets too ancient to name.

Watch my exclusive video Antimatter Propulsion: Harnessing the Power of Annihilation - https://nebula.tv/videos/isaacarthur-antimatter-propulsion-harnessing-the-power-of-annihilation

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

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/

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Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.

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

Credits: Machine Monitors

Episode 444b; May 1, 2024

Produced, Written & Narrated by: Isaac Arthur

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.

From Clarke’s Sentinel to deep-space defense systems, this episode dives into the idea of machine monitors—guardians of planets, civilizations, and secrets too ancient to name.

Watch my exclusive video Antimatter Propulsion: Harnessing the Power of Annihilation - https://nebula.tv/videos/isaacarthur-antimatter-propulsion-harnessing-the-power-of-annihilation

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

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: https://www.reddit.com/r/IsaacArthur/

Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.

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

Credits: Machine Monitors

Episode 444b; May 1, 2024

Produced, Written & Narrated by: Isaac Arthur

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.