Do aliens exist? Initially life has never been discovered outside this world, but that doesn’t mean it doesn’t exist.
Aliens exists or not: We have not yet discovered life on any other planet, and we have not seen any scientifically supported evidence for extraterrestrial life.
We can’t yet say for sure whether or not aliens exist. To quote Carl Sagan: “The universe is a pretty big place. If it’s just us, it seems like an awful waste of space.” So, NASA will keep looking.
As per a researcher, there are four extraterrestrial civilizations in the Milky Way that could attack planet earth. Alberto Caballero, a PhD student at the University of Vigo in Spain.
He pinpointed the exact source of the “WoW Signal”, which was detected in 1977, reported Vice News.He then applied this to the estimated number of exoplanets in the Milky Way. As per his calculations, the number of civilizations that could possibly invade our planet is four. He has also warned scientists to use caution in using the practice of Messaging Extraterrestrial Intelligence (METI).
While speaking to Vice, he said, “I did the paper-based only on life as we know it. We don’t know the mind of extraterrestrials. An extraterrestrial civilization may have a brain with a different chemical composition and they might not have empathy or they might have more psychopathological behaviours.”
“I found this way to do [the study], which has limitations because we don’t know the mind of what aliens would be like,” he added.
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