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Scientists: 3.5 billion years ago, the moon could be full of life

In NASA, Roskomos, in Europe and China, everywhere consider large-scale lunar expeditions an integral part of the development of cosmonautics in the coming decades. And now they are asking questions: what to look for in the second place? Primary interest is naturally caused by water, but further efforts of scientists can be directed to search for traces of ancient lunar life.

Today, the Moon is unmistakably lifeless, but could life have existed on it before, even if not for long? The most optimistic hypothesis is as follows: 3.5 billion years ago, the outer surface of the Moon has cooled down, but right below it was a liquid core. It created a weak magnetic field, which, together with gravity, helped to keep the gases hitting the bowels. The Moon had its own atmosphere, though subtle, but very saturated, thanks to which it had primitive protection against cosmic radiation.

Liquid water on the Moon at that time was exactly, but right next to it, on Earth, the protomory was already heavily infested with microorganisms. And if it is proved that meteorites from Mars flew to Earth and could bring on themselves the bacteria there, then the exchange of similar “messengers” between our planet and its companion is even simpler. The first Moon was colonized not by people, but by microbes – in that short geological period, when there were paradisiacal conditions for them.

If the hypothesis is correct, then under the layer of regolith it will be possible to find no less traces of ancient life than we find the fossil remains of beings on Earth. Or, on the contrary, their absence will show the inconsistency of the theory of the journey of life through space on meteorites. But scientists still hope for a positive result, because it will help to better understand how life is organized in the universe.

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