Astronomers have discovered why there are no aliens on nearby exoplanets

Astronomers have discovered why there are no aliens on nearby exoplanets

MOSCOW, 9 Jan — RIA Novosti. Life hardly exists at Proxima Centauri b and other nearby planets have red dwarf stars because of the almost complete absence of water and organic matter on their surface. To such conclusion came the scientists, who published an article in the journal Astronomy & Astrophysics.

“Earth, as we know, was originally a dry and lifeless — inventory of organics and water on it emerged through the comets and asteroids from the outskirts of the Solar system. It turned out that the worlds of red dwarfs do not have these reserves of “bricks of life” because these heavenly bodies are very quickly discharged outside the system,” said Glenn Schneider (Schneider Glenn) of the University of Arizona in Tucson (USA).

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Over the past three years scientists have found several planets that claim if not for the title of “twin Earth”, her “sisters” or “cousins”. The first planet was found in nearest star, Proxima Centauri, and the other three are in the star system of TRAPPIST-1 in the constellation of Aquarius, which inhabits seven earth-like planets.

All these planets have in common is that they have small size and are in the “zone of life” — in orbit where water can exist in liquid form, and revolve around red dwarfs. The last point is both a plus and a minus — red dwarfs live very long, which leaves plenty of time for the origin of life, but some of them have a very restless nature in his youth, and develop a series of flashes.