Science & Futurism with Isaac Arthur cover image

Barriers to Becoming a Kardashev Civilization

Science & Futurism with Isaac Arthur

00:00

How to Spot a K2 Civilization

Earth glows with infrared emissions at roughly 290 Kelvin. The amount and spectrum of light the star gives off matches very tightly with its mass and brightness. It should be easy to spot any K1 civilization that is absorbing or emitting more power than we would expect it to naturally.

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