From O’Neill cylinders to spiral habitats, discover how humanity might build colossal, interconnected cities high above Earth.

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Credits:
Orbital Arcologies - Mega Cities in Space
Written, Produced & Narrated by: Isaac Arthur
Graphics: Bryan Versteeg, Jeremy Jozwik, Katie Byrne, Udo Schroeter
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Orbital Arcologies: Mega-Cities in Space (Narration Only)

What if the end of everything came not from cosmic fate, but from us? This episode examines the physics, probability, and peril of experiments that could, in theory, unravel the universe.

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Credits:
Could We Accidentally Destroy the Universe?
Written, Produced & Narrated by: Isaac Arthur
Editors: Lukas Konecny
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator
Chapters
0:00 Intro
2:38 Vacuum Decay (False Vacuum Collapse)
9:59 Strange Matter Conversion
13:09 Gray Goo Scenario (Nanotechnology Out of Control)
16:05 Runaway Energy Reaction
19:06 Altering the Constants of Nature
20:49 Brane Collision (M-Theory Catastrophe)
22:27 Time Travel or Causality Paradox
23:55 Nebula
25:20 Simulation Shutdown
27:21 Big Rip or Cosmological Instability
28:35 Baby Universe Creation or Collapse
29:51 Why It Hasn’t Happened Yet (Anthropic Principle & More)
31:49 Channel Updates

Could We Accidentally Destroy the Universe?

Could We Accidentally Destroy the Universe? (Narration Only)

You’ve made it to a new world—but how do you make a living when Earth is light-years away? We chart how colonies bootstrap markets, money, and meaning—from scrip and rationing to trade networks and post-scarcity systems.

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Credits:
Colonial Economies - How Do You Make Money on a New Planet?
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Colonial Economies - How Do You Make Money on a New Planet?

Feudalism once ruled Earth—could it rule the cosmos too? We dive into the strange but plausible world of space nobles, orbital dukes, and knights of the vacuum clad in power armor or piloting mecha.

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Credits:
Feudal Futures - Knights & Nobles in the Space Age
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images 
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

Feudal Futures - Knights & Nobles in the Space Age

Feudal Futures - Knights & Nobles in the Space Age (Narration Only)

NASA’s Perseverance rover may have found the best hint yet of Martian life — strange minerals in Jezero Crater that could be microbial fingerprints… or just clever geology.

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Credits:
Life on Mars: Perseverance’s Sapphire Canyon Discovery
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images 
Music Courtesy of Chris Zabriskie

Life on Mars? Perseverance’s Sapphire Canyon Discovery

Life on Mars? Perseverance’s Sapphire Canyon Discovery (Narration Only)

3I/ATLAS is only the third interstellar object we’ve ever seen — but could it really be an alien artifact, or just another comet with unusual traits?

Any comments, corrections, or thoughts on the video? email Isaac.Arthur.Utube@gmail.com

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Is 3I/ATLAS an Alien Artifact?
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images 
Music Courtesy of Chris Zabriskie, Stellardrone

Is 3I/ATLAS an Alien Artifact?

The discovery of 2017 OF201 reminds us that even small worlds can hold vast potential — not just as frozen orbs, but as stepping stones for interstellar civilization.

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Credits:
New Dwarf Planet Discovered: A Minor Planet With a Major Future?
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images 

Chapters
0:00 Intro
1:11 What Counts as a Dwarf Planet?
3:47 The New Arrival: 2017 OF201
4:47 From Iceball to Megastructure
6:03 Waypoint to the Stars
8:38 Lessons from Pluto and the Dwarf Planet Census
9:43 Engineering Challenges & Opportunities
10:50 Extrapolating the Frontier

New Dwarf Planet Discovered: A Minor Planet With a Major Future? (Narration Only)

Could life thrive in seas of methane instead of water? We explore Titan-like worlds and the alien ecosystems they might harbor.

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Credits:
Life in Methane Oceans: Could Aliens Evolve on Titan-like Worlds?
Written, Produced & Narrated by: Isaac Arthur
Editors: Thomas Owens & Lukas Konecny
Select imagery/video supplied by Getty Images 
Music Courtesy of Stellardrone and Epidemic Sound http://epidemicsound.com/creator