Science & Futurism with Isaac Arthur cover image

Barriers to Becoming a Kardashev Civilization

Science & Futurism with Isaac Arthur

00:00

The Different Types of Planets and Stars

Planet luminosity can vary by an entire order of magnitude or two between two different planets or two different galaxies. Our sun at 4x10 to 26 watts is 2 billion times brighter than Earth, and a bit under 10 billion times dimmer than our galaxy. A sub-K1 civilization on Pluto that was causing just 1% variation of its normal emissions would correspond to some subterranean cities for trillion watts of power generation.

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