American geologists had analysed the chemical composition of several Martian meteorites formed in the depths of Mars, and found that they contain the same number of water molecules, and the earth mantle, and published their findings in a paper in the journal Geology.

It is believed that the breed Martian crust and mantle include a minimum amount of water than their terrestrial counterparts. This hypothesis was confirmed by the data received from the space probes and other astrophysical devices. However, the fact that in the distant history of Mars on its surface there were oceans, beyond the comprehension of "dry" mantle of the red planet. A group of astrogeology under the direction of Eric Heure the Carnegie Institution in Washington (USA) found that the interior of Mars contain almost earthly amount of water, analyzing the chemical composition of two meteorites-shergottites.

As the scientists explain, shergotty are among some of the most rare meteorites - today on Earth was discovered only 34 fragment "space rocks". Data celestial bodies were formed on Mars and were thrown out in the distant past the red planet at falling on the surface of another meteorite. Among serguiev belongs notorious fragment Allan Hills 84001, inside of which it explorers discovered education, similar to the petrified remains of bacteria.

Hairy and his colleagues managed to get two sample serguiev formed about 2.5 billion years ago, within the mantle of Mars, and analyze their structure by means of so-called mass spectrometry of secondary ions. "We have analyzed two meteorite with very different histories "life". The matter is one of them has been carefully "mixed" with other elements in the formation, while the other managed to retain its original chemistry. However, the difference in the concentration of water was minimal, despite very different composition of the samples is to" - said Hairy. Researchers have discovered that meteorites contain from 70 to 300 mg of water per kilogram of the Martian rocks.

According to scientists, this value can be compared with the content of water in the Earth's mantle that is 50-300 mg per kilogram of substance.