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, \