Astronomers are searching for emissions from advanced alien superstructures. 👨🚀 engineering
They are looking for infrared signals that they believe could be the exhaust emissions of hypothetical Dyson spheres — massive megastructures that harness the energy of the surrounding universe. Their new paper focuses on two distant galaxies whose infrared emissions have so far eluded easy explanation.posits that it is extremely likely, given the fact that there are billions of stars in the Milky Way alone, many of which have orbiting planets in habitable zones.
Chen and his team believe that, if life is out there, the most likely way to find it is to search for the footprint of the most advanced civilizations. Specifically, they are searching for Kardashev Type III civilization lifeforms. The Kardashev scale was proposed by Soviet astronomer Nikolai Kardashev in 1964 as a means to measure a hypothetical civilization's level of technological advancement based on the amount of energy it is able to harness from the surrounding universe.
K3 lifeforms sit at the top of the scale as the most advanced type of alien civilization. According to the scale, they would be able to harness the power of black holes, stars, and quasars for their energy needs using technologies similar to the — a massive structure that could surround a celestial object such as a star without collapsing. Humans, it is worth noting, are not even considered Type 1 yet, as that would require us efficiently harnessing the power of the Sun.
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