Are there really aliens beyond Earth? Based on statistics alone, the answer is yes. There are at least 100 billion stars in the Milky Way, and the vast majority of them have planets orbiting them. Although there are huge statistics, there is still a lack of sufficient evidence. The Breakthrough Listen project has submitted its first large-scale SETI (Search for Extraterrestrial Intelligence) findings, focusing on the search for extraterrestrial civilizations.
The project surveyed 60 million stars at the center of the Milky Way, a region of denser stars. By looking at a fairly small but busy part of the sky, astronomers can study many worlds. The team, which collected 600 hours of data using the Green Bank Radio Telescope in West Virginia and the Parkes Radio Telescope of the Commonwealth Scientific and Industrial Research Organization in Australia, detailed these in a paper accepted for publication in the Astronomical Journal. Observation results.
At present, the team has not found any signal from extraterrestrial organism , but it should be noted that what they are looking for in this search for is a deliberately emitted signal, the so-called technical feature - optics or microwave signals, laser emissions, or even "megastructures" some kind of alien beacon .
In the vast radio wave to find the signal from the alien creature may require a lot of work, the team used "eavesdropping on the leakage radiation" (eavesdropping on the leakage radiation). While science fiction often focuses on TV transmission may be the main signal, but from earth, the biggest leaks are actually from airport radar.
While this survey did not find aliens, it did drive the search for extraterrestrial intelligence.The authors conclude in their paper: "We compared the sensitivity of our survey with some well-known SETI surveys and demonstrated that our survey has a remarkable sensitivity with a frequency span that has never been explored in terms of SETI ".
