Finding evidence of alien civilizations in the universe has been the goal of many scientists throughout the years. Numerous techniques have been tried and failed, including sending radio broadcasts into space and using enormous satellites to hunt for distant galaxies. Scientists have attempted to reverse the scenario, trying to figure out how aliens would discover humans in the vast cosmos. A group of astronomers from Japan, Thailand, the UK, and France studied the many ways that extraterrestrial life may sense our existence and focused on a technique known as “microlensing“
According to the study, technological civilizations “might theoretically use a long-range detection-method like microlensing to identify the Earth at galactic distance scales.”
Using powerful microscopes to examine the objects, the technique of microlensing is employed to find distant planets or stars. The research is carried out when a star shines brightly for whatever cause and the atmosphere acts as a lens to magnify the phenomena for those seeing it.
According to the paper that was accepted for publication in Monthly Notices of the Royal Astronomical Society, NASA‘s James Webb Space Telescope employs a similar procedure.
According to the study, any extraterrestrial civilization would be able to recognize our planet by studying the Milky Way, and depending on the alignment of the stars, the earth would be blazing brilliantly at a certain period. The same amount of technology was assumed while creating this scenario, though.
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