Experts from around the world are doing everything possible to find evidence that aliens exist. They are constantly developing new methods for searching for extraterrestrial civilizations, but so far none of them has brought the desired result, reports IFLS.
Some time ago, scientists proposed another method for searching for aliens. They believe that it is necessary to take into account how polluted the atmosphere of a planet is.
A study was published in the scientific journal Astrophysical Journal that outlines how nitric oxide can be used to look for signs of extraterrestrial civilization.
On our planet, gas acts as a combustion product. It can be seen in the atmosphere with innovative telescopes. They are also used in order to keep track of other planets that are located far enough from the Earth.
Ravi Copparapu talked about the fact that on our planet, nitric oxide mainly enters the atmosphere as a result of the activities of various man-made enterprises. The presence of a sufficient amount of such gas indicates that an industrial civilization lives on the planet.
Previously, in the atmospheres of discovered exoplanets, specialists were looking exclusively for biosignatures, but now they will also pay attention to technosignatures.
These are special molecules that can be present in the air if there is an industrial civilization on the planet.
Scientists also considered some other technosignatures. For example, chlorofluorocarbons, which are also a hallmark of industrial development.