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PODCAST

Science & Futurism with Isaac Arthur

Science & Futurism with Isaac Arthur explores humanity’s long-term future through space exploration, advanced technology, and big-picture science. Hosted by National Space Society President Isaac Arthur, each episode uses real science and careful speculation to examine space colonization, megastructures, artificial intelligence, post-scarcity economies, and the physics shaping civilization beyond Earth.

science

All Episodes

00:34:59

Nomadic Aliens – Cultures That Wander the Galaxy

Science & Futurism with Isaac Arthur ·

2026/05/09

Alien civilizations might not have homeworlds at all. Some may live as wandering fleets, carrying their cultures, histories, and futures across the stars.

en

00:34:40

Nomadic Aliens – Cultures That Wander the Galaxy...

Science & Futurism with Isaac Arthur ·

2026/05/09

Alien civilizations might not have homeworlds at all. Some may live as wandering fleets, carrying their cultures, histories, and futures across the stars.

en

00:34:01

The Tokamak Problem: Can We Ever Make Fusion...

Science & Futurism with Isaac Arthur ·

2026/05/07

Can nuclear fusion ever be practical? We explore tokamaks, plasma confinement, energy balance, and the real engineering challenges behind building a working fusion reactor—and whether fusion power will ever scale.

en

00:34:21

The Tokamak Problem: Can We Ever Make Fusion Practical?

Science & Futurism with Isaac Arthur ·

2026/05/07

Can nuclear fusion ever be practical? We explore tokamaks, plasma confinement, energy balance, and the real engineering challenges behind building a working fusion reactor—and whether fusion power will ever scale.

en

00:24:13

Genetic Bottlenecks – How Few People Can Start a...

Science & Futurism with Isaac Arthur ·

2026/05/03

When disaster leaves only a handful, can a civilization restart? We explore genetic bottlenecks, colony failure, and the limits of survival.

en

00:23:50

Genetic Bottlenecks – How Few People Can Start a...

Science & Futurism with Isaac Arthur ·

2026/05/03

When disaster leaves only a handful, can a civilization restart? We explore genetic bottlenecks, colony failure, and the limits of survival.

en

00:34:00

Fleet of the Void - Designing Warships for Deep Space

Science & Futurism with Isaac Arthur ·

2026/04/30

How would real space war actually work? From stealth myths to fuel limits, explore the brutal physics shaping starships, tactics, and survival in deep space combat.

en

00:33:38

Fleet of the Void - Designing Warships for Deep Space...

Science & Futurism with Isaac Arthur ·

2026/04/30

How would real space war actually work? From stealth myths to fuel limits, explore the brutal physics shaping starships, tactics, and survival in deep space combat.

en

00:36:56

Post-Consciousness Civilizations: Evolving Beyond...

Science & Futurism with Isaac Arthur ·

2026/04/26

From humans to machines to silent superintelligence, we explore a future where civilizations evolve beyond consciousness itself.

en

00:36:19

Post-Consciousness Civilizations: Evolving Beyond...

Science & Futurism with Isaac Arthur ·

2026/04/26

From humans to machines to silent superintelligence, we explore a future where civilizations evolve beyond consciousness itself.

en

00:25:38

Magnetic Monopoles & Magmatter - The Strongest...

Science & Futurism with Isaac Arthur ·

2026/04/23

Magnetic monopoles are hypothetical particles with a single magnetic charge — north without south. Predicted by grand unified theories, they may be incredibly massive and could bind together into “magmatter,” an ultra-dense material stronger than anything known in nature.

en

00:42:06

1 Million A.D.

Science & Futurism with Isaac Arthur ·

2026/04/19

A million years from now: will we rule the galaxy, rewrite ourselves, or vanish? Explore humanity’s distant future—and whether you might still be there to see it.

en

00:41:44

1 Million A.D. (Narration Only)

Science & Futurism with Isaac Arthur ·

2026/04/19

A million years from now: will we rule the galaxy, rewrite ourselves, or vanish? Explore humanity’s distant future—and whether you might still be there to see it.

en

00:24:10

Additive Manufacturing in Microgravity (Narration Only)

Science & Futurism with Isaac Arthur ·

2026/04/16

The most expensive part of space travel isn’t the fuel—it’s the cargo. Additive manufacturing isn’t a sci-fi magic trick; it’s the key to building shipyards and telescopes at scales rockets were never meant to handle. We aren't just launching ships anymore; we're moving the factory to the void.

en

00:24:31

Additive Manufacturing in Microgravity

Science & Futurism with Isaac Arthur ·

2026/04/16

The most expensive part of space travel isn’t the fuel—it’s the cargo. Additive manufacturing isn’t a sci-fi magic trick; it’s the key to building shipyards and telescopes at scales rockets were never meant to handle. We aren't just launching ships anymore; we're moving the factory to the void.

en

00:38:15

The Fermi Paradox: Human Uniqueness and Oddity...

Science & Futurism with Isaac Arthur ·

2026/04/12

Why does the galaxy seem silent? Maybe aliens aren’t rare—maybe humans are. We explore the strange mix of traits that turned one clever primate into a technological civilization, and whether our oddities might be the real Great Filter.

en

00:24:32

Cosmic Strings – Cracks in the Fabric of the Universe...

Science & Futurism with Isaac Arthur ·

2026/04/09

Cosmic strings may be ultra-thin defects in spacetime—relic “cracks” from the early universe. How we’d detect them, what they mean for physics, and how aliens might exploit them.

en

00:30:27

Interstellar Banking - The Galactic Financial System

Science & Futurism with Isaac Arthur ·

2026/04/04

Interstellar city-states may dominate future space travel, governing the laser highways that connect stars and shape galactic civilization.

en

00:29:49

Interstellar Banking - The Galactic Financial System...

Science & Futurism with Isaac Arthur ·

2026/04/04

Interstellar city-states may dominate future space travel, governing the laser highways that connect stars and shape galactic civilization.

en

00:26:13

The Space Habitat Diaspora – Humanity Spreads Without...

Science & Futurism with Isaac Arthur ·

2026/04/02

Humanity may not colonize planets—we may build our own worlds. Explore how rotating space habitats could spread across the Solar System and beyond, forming a vast diaspora of artificial worlds that reshape civilization and interstellar expansion.

en

1,171 results

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