Worldhouses & Paraterraforming: Building Planets, One Dome at a Time

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Why wait centuries to terraform Mars when you could build a habitable world overnight? In this episode, we explore the concept of Worldhouses—planet-spanning domes that let us colonize hostile worlds by enclosing them beneath engineered skies, one dome at a time.

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Credits:
Worldhouses
Episode 499; May 15, 2025
Written, Produced & Narrated by: Isaac Arthur
Graphics: Fishy Tree & Ken York YD Visual
Select imagery/video supplied by Getty Images
Music Courtesy of Epidemic Sound
Chris Zabriskie, "Unfoldment, Revealment", "A New Day in a New Sector"
Taras Harkavyi, "Alpha and..."
Stellardrone, "Red Giant", "Billions and Billions"

Chapters:
0:00 Intro
2:47 The Worldhouse Concept
7:04 How Would a Worldhouse Be Built?
15:19 The Quilt Approach: Expanding a Worldhouse Over Time
20:22 Antimatter Propulsion
21:42 Partial Enclosures: Mega-Domes Over Key Regions
23:56 Enclosing Asteroids: The Micro-Worldhouse
28:07 Earth as a Worldhouse: Could We Enclose Our Own Planet?
30:43 The Future of Worldhouses