"Aliens" extraterrestrial life or aliens,

"Aliens" extraterrestrial life or aliens, are they real or not? From the controversies of the people of the world in various perspectives for a very long time and trying to find the answer since the launch of space probes to planets and other solar system objects The search for distant extrasolar planets

This includes attempting to find unusual radio signals from deep space through various SETI (Search for ExtraTerrestrial Intelligence) projects around the world. Also known as the search for signals from aliens. Beginning in the 1900s

Over time, technology has been developed and improved. came to help in the search for signals since the use of supercomputers help analyze data And allow the general public to participate in the search for signals through the SETI@home project, until now, still unable to find evidence confirming the existence of aliens or alien intelligent beings This makes earthly human beings remain the only intelligent beings in the universe.
Another project, called METI (Messaging extraterrestrial intelligence), proves the existence of extraterrestrial life. But different, focusing on identifying and calling for extraterrestrial beings to know about the existence of life on Earth Starting from sending metal plates with various symbols. attached to the craft

Later, NASA Sent a golden record telling the story of what happened in the world Like letting a letter in a glass bottle float Causing scientists to choose another method To send messages over radio signals in multiple processes. Amid protests, fearing that May cause disaster, bringing alien invaders into the human world.

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