- 10 April 2015
Post
natural satellite of the Earth may have appeared as a result of the collision of the planet with a celestial body, is remarkably similar to her composition.
Such a theory, published in journal Nature, could explain why the earth and moon rocks so little different from each other, which at first glance contradicts adopted today the so-called “theory of the formation of a shock”.
In the same issue of the journal published the results two other studies devoted to previously unexplored differences brought from the moon minerals from the earth.
According to scientists, these three materials together paint a compelling – and much clearer – picture of the origin of the Earth’s satellite.
The model of the formation of the Moon, built by researchers from France and Israel, with great accuracy recreates indignation arose at an early stage of formation of the solar system and calculates possible collision.
At the beginning of its existence, the proto-Earth had to go through a series of powerful blows from other celestial bodies.
According to theoretical calculations, the last of the attacks has become a powerful collision with a celestial body whose mass was about one-tenth of the Earth – Moon formed and formed as a result of the “debris” (mainly in liquid and gaseous state).
“The fault extraterrestrial”
inconsistencies in the fact that, according to this theory, most of the lunar material would have to be the breed of which was faced with the Earth object, and calculations show that all bodies flying in the time past, been a completely different nature.
“Thus, if the composition of the object is different from terrestrial rocks, in the same way would have to be different from the terrestrial and lunar minerals,” – said one of the study’s authors Hagai Perets at the Israel Institute of Technology “Technion”.
However, this is not the case.
“They are almost identical. And this is just one of the inconsistencies in a very beautiful for many other criteria “theory of the formation of a shock,” he explains.
That’s why Results from the 2014 study, indicating slight differences of terrestrial and lunar rocks, made in the scientific world created a furor.
The model calculated Peretz and his colleagues shows that crashed into the ground body could miraculously resemble our planet in composition, differing from it only slightly – which is confirmed by the study of lunar rocks.
More specifically, the model showed that a collision with a similar composition to the subject could take place with a probability of about 20%.
According to Peretz, it is quite reasonable probability to close many gaps in our knowledge of the origin of the Moon.
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