The "opportunity" to "meet" aliens is not just a little bit

At least 3,000 extraterrestrial civilizations are living in our "big home", the Milky Way, and there are so many of them that extraterrestrial explorers may not have to wait a lifetime for "seeing is better than missing". It is better to miss than to see" will eventually be their rational choice. Even in the "corner of the universe," the Milky Way galaxy, there are insurmountable distances between the homes of extraterrestrial civilizations that prevent humans and aliens from actually communicating with each other. A recent study shows that the chances of human-alien communication are extremely slim, and the possibility of contact across space and time is very rare. The diameter of the Milky Way is about 100,000 light years, and the speed of light is about 300,000 kilometers per second or 186,000 miles per second. A signal traveling at the speed of light would take at least four years to reach our neighboring planet, Ala Centauri, from Earth, and a signal traveling at the speed of light from one end of the galaxy to the other would take about 100,000 years.

By analyzing data from the Kepler Space Telescope and other observatory observations, astronomers have concluded from a phased study that Earth is only one of the galaxy's habitable homes, and that there are about 40 billion potentially habitable homes in the Milky Way. Each year, about one new habitable home appears in the Milky Way galaxy, and life and growth-friendly planets seem to fill the starry sky, but astronomers have encountered the problem of not knowing where to look for them. This is the spacecraft necessary to meet aliens. Recently, Michael Garrett, head of the Astronomical Research Foundation of the Netherlands (AS TRON), presented the results of his research on the subject of aliens at the annual congress of the International Astronomical Association.

Astronomer Garrett explained that the galactic home of civilizations is divided by an average distance of at least 1,000 light years, and it would take at least 1,000 years for radio signals from Earth to reach the homes of human neighboring civilizations. People hope to communicate with intelligent life aliens by radio, communication back and forth over a distance equivalent to double the one-way distance, the earthlings would need to wait 2,000 years to receive a return message from the aliens, imagine that grandfather's grandfather's grandfather sent a message and grandson's grandson's grandson received a message. In 2,000 long years, the Earth and its inhabitants have been transformed. People look forward to communication with civilizations of different planets and need to wait at least a few thousand years for the opportunity to communicate. The TV series "The Legend of the New White Queen" has a theme song "A Thousand Years to Wait", which is a realistic scenario in the space world, where the "miracle of life" and "distant civilizations" in the distant space may be more remote than people currently imagine. The "miracle of life" and "distant civilizations" in distant space may be more complex and amazing than people's current imagination.

Extrapolating the evolution of extraterrestrial life from the evolution of life on Earth, there are different forms of life, but the essence of life is the same, and the emergence of extraterrestrial life can be expected when other habitable planets have the conditions as the Earth's surface. Intelligent extraterrestrial life may have formed at a later stage as if human beings were born on Earth in a short period of 10,000 or several hundred thousand years. The time of formation of intelligent life on Earth appears insignificant in comparison to the formation of life on Earth billions of years ago. One need not hold a pessimistic view of the discovery of extraterrestrial intelligent life. The discovery of signals of intelligent life in the Milky Way may be rare, but astronomers' search for extraterrestrial civilizations will not come up empty-handed. The Milky Way and extragalactic galaxies contain an uncountable number of habitable planets, and astronomers have made great strides in the field of radio astronomy and data technology. For the past 60 years, scientists at the Study of Extraterrestrial Life Institute (SITE) have searched for possible extraterrestrial intelligent life, primarily using radio telescope technology.

SITE scientists search primarily for extraterrestrial civilizations, but also for other types of radio sources, where mysterious radio burst signals are persistent and short-lived. The search for extraterrestrial intelligent life has a unique scientific value, which is the main reason why scientists are so keen to explore extraterrestrial civilizations, and aliens may be out there somewhere with great interest from space enthusiasts and the general public. The distances seem to limit human interaction with aliens. For the past 25 years, scientists have used a combination of optical and radio telescopes in the search for signals of intelligent extraterrestrial life. The Study of Extraterrestrial Life Institute (SITE) has recruited 3 million volunteers worldwide, and numerous sky enthusiasts have participated in big data analysis, and in the next 20 years, one may be able to answer the cosmological question of whether aliens exist. So far, the search for extraterrestrial intelligent life has been targeted mainly at Mars and the moons in our solar system.

There are at least five planets in the solar system where life is possible, and scientists envision 10 or more methods of searching for extraterrestrial intelligent life, with funding and technology being critical in the next 20 years. In addition to direct observation methods, it is possible to observe oxygen and methane in the atmospheres of distant planets, and the search for traces of extraterrestrial life can refer to atmospheric elements, on which the oxygen and methane in Earth's atmosphere are elements on which life activity depends. Astronomers send and receive radio waves into outer space, employing an effective way to actively contact intelligent extraterrestrial life. Some space radio signals appear to be sent and received intentionally, and some space radio signals are meaningless. Humans have invented practical radio technology in the last 100 years or so, and with more bits of information to be sent to distant outer space, humans have had plenty of time to continuously improve space observation techniques.

Many radio signals have been inadvertently sent into outer space, and the first television programs sent by humans included "I Love Lucy" and "The Ed Sullivan Show," which may have reached more than 10,000 stars. Dan Schweitzer, a scientist at the University of California, Berkeley, explained that stars near Earth may have received signals from the TV show "The Simpsons. People expect aliens to send similar signals when they reach Earth, either intentionally or unintentionally, and may receive TV shows from aliens who know nothing about the alien world, but watching TV shows has long been a major form of entertainment on Earth, and people pay far more attention to and appreciate TV and movie stars than aliens do. . Maybe one day aliens will be discovered, and everything will go on the way people live? The fact that scientists have not yet found any signs of aliens does not mean that aliens are not "across the water" from Earthlings, and scientists are speeding up the search for them.