Imagine engineering projects so vast they mold galaxies into new shapes. We’ll explore the staggering feats of Kardashev-3 and beyond civilizations, crafting CARD galaxies, Birch Planets, and even rearranging superclusters.

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Credits:

Spaceport Innovations - Designing the Next Generation of Launch Sites

August 3, 2025; Episode 746

Written, Produced & Narrated by: Isaac Arthur

Galaxy-Scale Megastructures & Kardashev-3 Civilizations

Written by: Isaac Arthur

Editor: Darius Said

Graphics: Jeremy Jozwik, Ken York, Sergio Botero, Steve Bowers

Select imagery/video supplied by Getty Images

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

Stellardrone, "Endeavour", "Red Giant", &"Billions and Billions"

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