The galaxy’s coldest “stars” may actually be alien megastructures
A new study explores how astronomers might detect Dyson swarms, which are hypothetical megastructures built by advanced civilizations to harvest stellar energy. Researchers suggest that red dwarfs and white dwarfs are the most likely candidates for these structures due to their longevity and compact size.
Why it matters
Identifying potential signatures of alien megastructures provides a concrete framework for the search for extraterrestrial intelligence using modern telescope technology.
Since physicist Freeman Dyson first proposed the idea in 1960, the hypothetical "Dyson sphere" has become one of the most intriguing concepts in the search for extraterrestrial intelligence. Rather than a single solid shell, scientists now envision a Dyson "swarm" made up of countless orbiting structures that capture nearly all of a star's energy.
While the concept has long been discussed in theory, an important question remains: if one actually existed, what would astronomers see? A new study by Amirnezam Amiri of the University of Arkansas, currently available as a pre-print on arXiv and scheduled for publication in Universe , explores exactly how these enormous structures might appear through modern telescopes. The research also identifies the types of stars most likely to host them.
Red Dwarfs and White Dwarfs Are Prime Targets
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