Pictures taken at the American Machine "Messinger", showed the depth of the depressions on the planet places is 9 miles away. And this, according to scientists, it is enough to keep the ice from the sun's rays.
Struck by NASA specialists and the magnetic field of the planet. It turned out that it was, in contrast to the ground, asymmetrically its center by 500 kilometers shifted to the north. This means that space and solar radiation on the south pole of Mercury is much more powerful than in the north. Now astronomers scratching their heads, why.