Geophysics from China, the United States and Japan have demonstrated that the core of the moon should be surrounded by a liquid layer. To such conclusion the authors came in the result of computer simulation. A study published in the journal Nature Geoscience.

Watery layer is a delicate viscous environment between the asthenosphere is lower mantle of the Earth satellite and the core of the moon, which covers the core uneven way. With him, as demonstrated by the results of computer prediction, associated attenuation of seismic waves.

The reason of occurrence of sensitive liquid layer experts called friction in the bowels of the satellite due to gravitational interaction with the Earth. In his research scientists turned their attention to permanent configuration in the gravitational field of the moon, when the core of the moon slips inside the satellite, and the liquid layer acts as a lubricant.

The usual scheme of construction of the moon suggests that, in the centre of the satellite is the kernel, which is surrounded by a thick layer of the mantle, closed top crust. They say that between liquid outer core and asthenosphere is partly molten boundary layer of a thickness of less than 500 km, education is associated with a division of hard and molten phases in the very beginning of the formation of the moon. Computer prediction, held physicists, adds an additional layer under asthenosphere.

Scientist now have to find out the justice of their own doctrine. But even in that case, if it is reliable, it remains an open question as to why the layer of water is not cured for 4.5 billion years since the establishment of the system the earth-the Moon. It is likely that physicists have to adjust your position about the origin of Earth satellite.
sections: Society