Doctor of biological Sciences Anton Syroeshkin commented on the recent statement by cosmonaut Anton Shkaplerov on “came from outer space” bacteria on the outer surface of the International space station. According to the scientist, such wording should not lead to think that the detected organisms really came to Earth from other planets.
According to Syroeshkin, DNA, bacteria detected on samples from the Windows, with solar panels of various modules, belongs to the microscopic inhabitants of the Earth. Basically we are talking about extremophiles, i.e. microorganisms that are resistant to extreme conditions. Anyway, no scientific evidence of the existence of extraterrestrial life have not yet, said the scientist, who is referred to by N+1.
The expert stressed that on the outside of the ISS was not found any live bacteria, and the findings represent only the DNA samples on the viability of the talk is premature. “We have not sown. But, judging by the fact that large DNA fragments remain intact under the action of x-rays, ultraviolet radiation, proton stream, the bacteria themselves too, it could remain intact,” added Syroeshkin.
The orbit of the ISS is located about 400 kilometers above the Earth’s surface, however, microorganisms could get there not only on Board the space module. Between earth’s surface and the ionosphere is constantly flowing electric current, and if the example of “downward” branches can be called lightning, the ascending branch can rise to great heights drops aerosols and dust particles. With them on the flight altitude of the International space station may turn out to be earthly bacteria. To do this, the microorganisms need to overcome the tropopause and stratopause, but all the evidence suggests that they rise under the impact of the global electric circuit.
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