2015-04-09 15:10 [Photo: sxc / cc / flaivoloka] 
Computer simulations of collisions between protoplanetami and studies of the isotopic composition of lunar rocks tungsten gave scientists clues within the rozwikływania revealing the origin of the Moon.
Articles presenting recent research results have been published in the online version of the journal Nature ,,. “
For nearly 30 years the most popular among scientists image formation of the Moon is as follows: within 150 million years after the formation of the solar system object about the size of even half the size of Mars collided with the Earth, throwing into space, large quantities of rock and dust that then used to form the Moon.
This hypothesis agrees with the size of the moon and its orbit around the Earth parameters, but encounters a problem when comparing the isotopic composition of the rocks on the Earth and the moon – they are too similar to each other. And it seems that the Moon should contain ,, isotopic fingerprints “of a foreign object, which presumably different in structure from the Earth.
There were so few additional hypotheses. Perhaps can cloud made from impact-first carefully intermarried with the matter of the earth, and then formed the Moon. Another possible option is to coincidence of the isotopic composition of the early Earth and the object that hit her. The third concept suggests that the moon formed from earthly matter, and not derived from the object striking (but that seems very unlikely, because you need to be very unusual impact).
,, Nature “published the results of computer modeling carried out by a group of Israeli-French. The researchers simulated various collisions, in which the Earth could participate in the initial period of its existence. The models indicate a 20 percent chance of a clash of two very similar protoplanet (ie, eg. The original Earth and the other object).
The following articles are described in studies conducted by the two other groups of scientists – a German and an American – who supplied new analysis results of the isotopic composition of lunar rocks, which combine the creation of a model of the Earth’s natural satellite uncertainties described above. Teams borrowed from NASA lunar soil samples and looked at the tungsten isotopic composition. It turned out that the moon has a slightly larger proportion of the lighter isotope tungsten-182.
According to the German and American scientists, both Earth and Moon were just after the formation of the same isotopic composition. Then gathered the matter ejected during the impact, the Earth, as a greater focus that matter more. Discarded materials contained tungsten, but tungsten light isotope-182 was the relatively low. Therefore, ultimately on Earth (which gathered more ejected matter) should be slightly smaller proportion of the isotope tungsten than on the moon – which is exactly as it came out of the laboratory. (PAP)
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