Mercury is the planet of the Solar System that is closest to the Sun. This planet represents a hot world. During the day, temperatures reach 430 degrees Celsius, and at night they drop to -180. Then there are places on Mercury that the sun does not illuminate.
As with the Moon, the poles of Mercury are regions that are constantly in shadow. These zones are full of craters and are forever in the dark, regardless of the distance from the Sun.
Something amazing has also been found on the planet – ice deposits. It is quite unexpected that there is ice on this hot planet. However, this phenomenon can be explained, namely, asteroids, comets and meteorites can bring ice when they hit a planet, and if it happened at the poles of Mercury, where sunlight does not reach, the water would remain in a frozen state.
Extreme heat can be responsible for maintaining the ice on the planets. It sounds incredible, but this phenomenon has been known for a long time. This chemical process has been known since the 1960s. Minerals from the soil contain metal oxides, which are bombarded with charged proton particles, brought by the solar wind. The result is molecular oxygen and water. In specific conditions on this planet, in great heat, H2O molecules rise from the ground. So that they can reach other parts of the planet, even the dark craters at the poles, where they turn to ice.
This process may be responsible for the existence of about 10% of the ice on Mercury, experts say.