They detect radio signal from the direction of a planet similar to the earth

The 20-minute radio signal meets the main criteria to be qualified under the category of ‘extraterrestrial intelligence’.
From November 2020 to September 2021, the FAST spherical radio telescope in southwest China conducted its first extraterrestrial intelligence search project by searching for the same human electromagnetic signals as the “narrowband” radio signals used in communications. .

The key to these “narrowband” signals is that their emissions are not produced by natural astrophysical processes, but can only be detected by intentional transmissions or leaks in those transmissions, and this is what was detected, a radio signal that was held for 20 minutes.

A feature discovered by Chinese and American astronomers is that the FAST telescope’s receiver has 19 sectors, and even though only one sector points to the Kepler-438 system (473 light-years from Earth), 19 sectors receive and record data. simultaneously.

The FAST telescope analyzed 33 planetary systems, of which 29 planets are located in areas that we know may support life, and 5 are located in “terrestrial transit zones”, which means that extraterrestrial observers can observe our solar system and see The earth passes in front of the sun.

This information comes from the address of the Kepler-438 system in the constellation of Lyra, home to a planet called Kepler-438b, one of the most Earth-like planets outside our solar system.

Considering the information received through the radio signal and the comments of the Beijing Normal University and the University of California, among others, it was highlighted that the signal met the requirements to be classified as extraterrestrial intelligence because it was discarded. Sounds produced by man-made objects, such as satellites.

Despite this information that could account for an alien civilization, other data and evidence that could result in what is detected from Kepler-438 being “an instrumental signal of radio frequency interference” remains to be reviewed, so while these reviews are carried out , additional observations will be launched towards this planetary system.