Have you seriously considered if there are aliens in space? "Fermi's Paradox" vs. "Percolation Theory"

Is there no intelligent extraterrestrial life with advanced civilizations? (Photo: Graphs/Pixta)

Do aliens really exist? Although it sounds like science fiction, the Search for Extraterrestrial Intelligence (SETI) is now a cutting-edge scientific field that researchers around the world are working on. Keith Cooper, a British science journalist, is a scientist who challenges various mysteries such as ``Is there a planet other than the earth that is easy to live'', ``Can you find messages from outside the earth?'', ``Is contact with aliens dangerous?'' I will introduce some considerations on "Do aliens really exist?"

■Where are they all? 1950, Fermi [Note: Enrico Fermi (1901-1954). An American physicist of Italian origin] was in the break room with his colleagues at lunchtime one day when one of his colleagues, Emil Konopinski, read the latest issue of The New Yorker (May 2nd, to be exact). No.) was reading. The New Yorker is a satirical news magazine that is still published today. In that issue, there were two articles about mysterious stories in New York City. One article reported a spate of bizarre thefts of trash cans. Another article reported sightings of the latest boom in the United States: flying saucers. The cartoonists of The New Yorker merged the two articles into one in which the green dwarves grabbed a trash can with their tentacles and rushed into a flying saucer. I was drawing a picture.

　Fermi thought about it-not about trash cans or flying saucers, but about the bigger picture. "Where are they all?" he asked exaggeratedly. Perhaps they thought the flying saucer report was a phony misidentification of planes, and wondered if ETs hadn't visited us because interstellar travel was impossible. In the 1970s, Fermi's question was arranged by scientists such as Frank Tipler. They turned it into what they described as a paradox. The 70s was the era of the Daedalus program, when the Voyager probes were also taking off to the outer solar system and distant stars.