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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.

How Many Alien Civilizations Are There?

32 mins; June 08, 2025

Orbital Shipyards - Building Fleets in Space

52 mins; June 05, 2025

Orbital Shipyards - Building Fleets in Space (Narration Only)

51 mins; June 05, 2025

5 Fermi Paradox Explanations I Love… and 7 That Fall Flat (Narration Only)

27 mins; May 31, 2025

5 Fermi Paradox Explanations I Love… and 7 That Fall Flat

27 mins; May 31, 2025

Stormtroopers: Elite Warriors and the Evolution of Future Combat

43 mins; May 29, 2025

Stormtroopers: Elite Warriors and the Evolution of Future Combat (Narration Only)

42 mins; May 29, 2025

Ancient Machine Monitors: Alien Watchdogs, AI Custodians, and the Fermi Paradox (Narration Only)

25 mins; May 25, 2025

Ancient Machine Monitors: Alien Watchdogs, AI Custodians, and the Fermi Paradox

26 mins; May 25, 2025

Life in 2525 A.D. (Narrated Only by Isaac)

44 mins; May 22, 2025

Life in 2525 A.D. (Episode 500 Full Audio Drama Version)

46 mins; May 22, 2025

Worldhouses & Paraterraforming (Narration Only)

32 mins; May 15, 2025

Worldhouses: Building Planets, One Dome at a Time

32 mins; May 15, 2025

Post-Biological Civilizations: Life Beyond Flesh and Bone (Narration Only)

34 mins; May 11, 2025

Post-Biological Civilizations: Life Beyond Flesh and Bone

34 mins; May 11, 2025

Cities of the Future – Megacities, Arcologies, and Floating Utopias

38 mins; May 08, 2025

Cities of the Future (Narration Only)

37 mins; May 08, 2025

The Alien Cold War: Silent Competition Among Dormant Empires In A Dark Galaxy

47 mins; May 01, 2025

The Alien Cold War: Silent Competition Among Dormant Empires In A Dark Galaxy (Narration Only)

47 mins; May 01, 2025

Galactic Beacons: Teaching Tools or Tombstones?

26 mins; April 27, 2025

Galactic Beacons: Teaching Tools or Tombstones? (Narration Only)

25 mins; April 27, 2025

The O'Neill Cylinder Space Habitat: Islands In The Sky

38 mins; April 24, 2025

The O'Neill Cylinder Space Habitat: Islands In The Sky (Narration Only)

37 mins; April 24, 2025

Space Marines

34 mins; April 20, 2025

Space Marines (Narration Only)

33 mins; April 20, 2025

Post-Scarcity Civilizations: Infinite Resources & Our Future (Narration Only)

44 mins; April 17, 2025

Post-Scarcity Civilizations: Infinite Resources & Our Future

46 mins; April 17, 2025

We've Been Invaded By Aliens... Now What?

38 mins; April 13, 2025

We've Been Invaded By Aliens... Now What? (Narration Only)

38 mins; April 13, 2025

The Fermi Paradox & Zombie AI: Are Rogue Machines Hiding in the Cosmos? (Narration Only)

32 mins; April 10, 2025

The Fermi Paradox & Zombie AI: Are Rogue Machines Hiding in the Cosmos?

32 mins; April 10, 2025

The Future of Hydroelectric Power (Narration Only)

26 mins; April 03, 2025

The Future of Hydroelectric Power

26 mins; April 03, 2025

Crystal Aliens: Life, But Not As We Know It

23 mins; March 30, 2025

Crystal Aliens: Life, But Not As We Know It (Narration Only)

22 mins; March 30, 2025

What Is Hyperspace? Exploring the Science Behind FTL

42 mins; March 27, 2025

What Is Hyperspace? Exploring the Science Behind FTL (Narration Only)

42 mins; March 27, 2025

High-Gravity Worlds: The Planets That Crush You

30 mins; March 20, 2025

High-Gravity Worlds (Narration Only)

30 mins; March 20, 2025

Exiled Space Colonies

33 mins; March 16, 2025

Exiled Space Colonies (Narration Only)

32 mins; March 16, 2025

Hammer Habs & Tethered Space Habitats

27 mins; March 13, 2025

Hammer Habs & Tethered Space Habitats (Narration Only)

26 mins; March 13, 2025

Buzz Aldrin's Cyclers - A Safe Spaceship To Mars And Beyond

24 mins; March 10, 2025

Buzz Aldrin's Cyclers - A Safe Spaceship To Mars And Beyond (Narration Only)

24 mins; March 10, 2025

Methuselah Civilizations (Narration Only)

35 mins; March 06, 2025

Methuselah Civilizations: A Society of the Ageless

36 mins; March 06, 2025

Skyhooks, Rotovators & Space Ladders (Narration Only)

37 mins; March 02, 2025

Skyhooks, Rotovators & Space Ladders: Lifting Humanity To The Stars Without Rockets

37 mins; March 02, 2025

Gravity Tech: The Power To Reshape Our Civilization... And The Cosmos Themselves

29 mins; February 27, 2025

Gravity Tech: The Power To Reshape Our Civilization... And The Cosmos Themselves (Narration Only)

28 mins; February 27, 2025

Topopolis: The Eternal River Space Habitat

26 mins; February 23, 2025

Topopolis: The Eternal River Space Habitat (Narration Only)

25 mins; February 23, 2025

Black Sun Rising: Living On A Planet Around A Black Hole

33 mins; February 20, 2025

Black Sun Rising: Living On A Planet Around A Black Hole (Narration Only)

33 mins; February 20, 2025

Impossible Technologies: The Clarketech Compendium

91 hours 48 mins; February 16, 2025

Impossible Technologies: The Clarketech Compendium (Narration Only)

90 hours 48 mins; February 16, 2025

The Kardashev Scale & Population (Narration Only)

32 mins; February 13, 2025

The Kardashev Scale & Population

33 mins; February 13, 2025

Xenocide

35 mins; February 09, 2025

Xenocide (Narration Only)

34 mins; February 09, 2025

The Bernal Sphere (Narration Only)

25 mins; February 06, 2025

The Bernal Sphere

26 mins; February 06, 2025

The Fermi Paradox: Galactic Great Filters (Narration Only)

31 mins; January 30, 2025

The Fermi Paradox: Galactic Great Filters

32 mins; January 30, 2025

Giant Space Monsters

21 mins; January 26, 2025

Giant Space Monsters (Narration Only)

20 mins; January 26, 2025

Civilizations At The End Of Time: Eternal Intelligence

43 mins; January 23, 2025

Civilizations At The End Of Time: Eternal Intelligence (Narration Only)

43 mins; January 23, 2025

Untangling String Theory

36 mins; January 16, 2025

Untangling String Theory (Narration Only)

36 mins; January 16, 2025

Nanotechnology: The Future of Everything (Narration Only)

35 mins; January 12, 2025

Mass Drivers vs Rockets (Narration Only)

36 mins; January 09, 2025

Mass Drivers vs Rockets

37 mins; January 09, 2025

Nanotechnology: The Future of Everything

36 mins; January 09, 2025

Upcoming Energy Technologies

37 mins; January 02, 2025

Upcoming Energy Technologies (Narration Only)

36 mins; January 02, 2025

Predictions For Technology, Civilization & Our Future (Narration Only)

36 mins; December 29, 2024

Predictions for Technology, Civilization & Our Future

38 mins; December 29, 2024

The Fermi Paradox: Hermit Hypothesis

25 mins; December 26, 2024

The Fermi Paradox: Hermit Hypothesis (Narration Only)

24 mins; December 26, 2024

Space Elevators: Strategies & Status (Narration Only)

68 hours 25 mins; December 19, 2024

Space Elevators: Strategies & Status

69 hours 7 mins; December 19, 2024

Gravitic Spaceship Propulsion

34 mins; December 15, 2024

Gravitic Spaceship Propulsion (Narration Only)

34 mins; December 15, 2024

Off The Grid: Technological Autonomy (Narration Only)

28 mins; December 12, 2024

Off The Grid: Technological Autonomy

28 mins; December 12, 2024

The Medusa Spaceship Drive

28 mins; December 05, 2024

The Medusa Spaceship Drive (Narration Only)

27 mins; December 05, 2024

Building Biospheres (Narration Only)

32 mins; December 01, 2024

Building Biospheres: Engineering Self-Sustaining Ecosystems for Future Worlds

32 mins; December 01, 2024

The Stanford Torus Space Habitat (Narration Only)

31 mins; November 28, 2024

The Stanford Torus Space Habitat

31 mins; November 28, 2024

Ultra-Relativistic Spaceships: Racing Towards the Speed of Light (Narration Only)

23 mins; November 24, 2024

Ultra-Relativistic Spaceships: Racing Towards the Speed of Light

23 mins; November 24, 2024

The Fermi Paradox: Gravity (Narration Only)

35 mins; November 21, 2024

The Fermi Paradox: Gravity

35 mins; November 21, 2024

Aliens Have Contacted Us... Now What?

44 mins; November 14, 2024

Aliens Have Contacted Us... Now What? (Narration Only)

43 mins; November 14, 2024

Nuclear Fusion: Updates & Impacts (Narration Only)

46 mins; November 10, 2024

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Science & Futurism with Isaac Arthur

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