Astronomers have recently made a major breakthrough in the search for extraterrestrial life: the discovery of variable stars. These stars, which vary in brightness over time, could be a sign of an advanced, alien civilization. By studying the pattern of these stars’ variability, scientists can infer whether they are due to the presence of a nearby planet or to some other astrophysical phenomenon. If the variability is due to the presence of a planet, it could be an indication of an extraterrestrial civilization. This discovery could open up a whole new avenue of exploration for researchers looking to search for signs of life beyond the Earth.

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source: Phys.org