Mercury Mercury (Mercury) as a planet, which is closer to the Sun, most are small planets, and the Moon is not subject to. The internal structure of mercury and consists of a large iron cores are approximately 1,900 kilometres radius up to 1800, surrounded by a silicate layer (similar to that in the Earth's axis is wrapped with a metal shell and a man), which is only 600 km thick, up to 500 portions of the axis may be melting are also. In 2517 (1974) United States Marine vehicles sent to explore and map the banner 10 surface mercury for the first time, but because mercury is near the very Sun. It can map only 45 per cent of all the mercury surface space is filled with numerous holes similar to the Moon surface. Big mountains and Plains are large General. Lori has a flat basin, the cache size is approximately 1300 km diameter astronomers assumed that such large flat basin caused by meteors in the Crashworthiness of initial age of the solar system. Mercury has no atmosphere envelops. Mercury is near the Sun, so the day is very high temperatures up to 430° C night temperature reduction, but only 180° C-temperature difference between day and night to 610° C.
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