At the dawn of human civilization, limited by scientific concepts and technology, we believed in the existence of gods and regarded the earth as the center of the universe. However, with the rapid development of astronomy and cosmology, mankind has gradually realized that there are billions of stars in the universe, and the earth is just one of the tiny specks of dust. This change in perception has led us to firmly believe that the existence of extraterrestrial life is not impossible in this vast sea of stars.
The 20th century was an era of rapid development of human science and technology. After World War II, countries realized the importance of science and vigorously developed scientific research. In the "space race" between the United States and the Soviet Union, the importance of space research and exploration became increasingly prominent. In 1972, NASA launched the "Pioneer 10" spacecraft, carrying the "Earth Manual" depicting the image of human beings and the location of the Earth, and pinning on the ardent expectations of human contact with extraterrestrial intelligent civilizations.
However, in this year, astronomers in the former Soviet Union were observing an extraterrestrial planet when they accidentally received a set of strange signals from outer space. This signal comes from the far reaches of the universe, and its complexity and regularity are astounding. After repeated analysis and comparison, the scientists ruled out all known astronomical phenomena and earth interference factors, and finally came to the conclusion that this was most likely a radio signal sent by an extraterrestrial civilization.
After their various methods of decryption and computational attempts, scientists have never been able to find the correct arrangement of this set of signals. Up to now, the former Soviet Union has been disintegrated for many years, but this set of strange garbled signals is still an unsolved mystery.
In recent years, with the introduction of concepts such as "Hawking Prophecy" and "Law of the Dark Forest", mankind's attitude towards the search for extraterrestrial civilizations has shifted from enthusiasm to vigilance. The progress of science and technology has made us more aware of our own insignificance, and it has also made us full of awe for the existence of extraterrestrial civilizations. Perhaps, on the road of exploring the mysteries of the universe, maintaining humility and steadiness is the most important attitude that we human beings on earth should have.