Over 50 years ago, the theoretical physicist and mathematician Freeman John Dyson – an expert in astronomy, nuclear engineering, solid-state physics and quantum electrodynamics – theorized that a highly advanced “extraterrestrial civilization would harvest most of its energy from their star, which would both limit the amount of visible light expelled outward and increase the levels of infrared radiation.” It was a fascinating idea but not one that could be put to the test – until now.
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