Not only the people who love paranormal are trying to find proofs regarding the existence of extraterrestrial intelligence but even scientists. Explorations on galaxies far enough from Earth have been carried out by two Pioneer probes. Additionally, two voyager probes will soon join them in gathering information on alien artifacts and more will most likely to come. Despite these efforts, humankind still did not find any other civilizations doing the same. A mathematical approach has been developed by a pair of postdoctoral researchers at Penn State to demonstrate that humankind’s outer space explorations in searching alien artifacts are not enough.
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