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Dyson sphereCNN
•87% Informative
Freeman Dyson theorized a shell made up of mirrors or solar panels would completely surround a star.
Dyson spheres would give off waste heat detectable as infrared radiation.
A new study that looked at 5 million stars in the Milky Way galaxy suggests that seven candidates could potentially be hosting Dyson sphere.
The candidate stars are all red dwarfs, the most common type of star in our galaxy.
They haven’t been observed yet by any of the telescopes that could potentially spot orbiting planets.
That supercolossal scale probably means that Dyson spheres, if they exist at all, are very rare.
The new study could offer a more fruitful path in the search for extraterrestrial intelligence, an astronomer says.
However, contamination by circumstellar debris disks, which mimic Dyson sphere infrared signatures, remains a concern, he adds.
A paper published in response to the study suggests that at least three of the seven stars have been “misidentified” as Dyson spheres.
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