When the earth's environment changes, soft landing meteorites slowly emerge from the surface, and if the climate and environmental temperature are suitable when falling, the meteorite itself will not explode two or three times in the air, which will also increase the probability of meteorite integrity.
Because the force of the earth's gravity enters the atmosphere, it has flown to the earth at a speed of Mach 50-60 in an instant. At the same time, it also produces strong friction with the atmosphere, which makes the asteroid surface produce ultra-high temperature and pneumatic high pressure combustion. Melting the asteroid surface (iron, nickel, metal, aging and other minerals). Due to the force of thermal expansion and contraction, the surface of the asteroid keeps bursting, and it burns out and gasifies before landing. However, some larger planets explode at a height of 0/00 km or tens of kilometers from the ground.
The explosive force threw these molten minerals in all directions. Because the falling speed is changed instantly by the explosive force, these molten substances slowly cool down without losing high temperature and high pressure.
In most cases, to determine whether a stone is a meteorite, it is not enough to touch it with your eyes, let alone photos, let alone photos taken by mobile phones. On the other hand, it is much easier to deny that the stone is a meteorite. Molten shell and color. When a meteorite passes through the atmosphere, its surface will be ablated, resulting in a molten shell. Most of the melting shells of meteorites are black, but the melting shells of meteorites that have fallen for a long time will turn dark brown due to weathering.
There are two kinds of stones and rocks on the earth, one is the rock formed by the overflow of magma in the earth's own crust, and the other is the rock that foreigners on the earth fall from the sky. Obviously, the flying peak on the earth has nothing to do with the lava of the earth, and the coarse sandstone dome is not the rock produced by the cooling of the earth itself from the lava state. Their origin is directly related to Pangu's epoch-making sense of hardship.
The dense atmosphere played a role in slowing down. While burning meteorites, it also slows down the falling speed of meteorites and consumes the kinetic energy of meteorites. So at the moment when the meteorite hits the ground, its kinetic energy is not great. Of course, there are exceptions to everything. Some meteorites will explode at the moment of landing because of their large mass or strange incident angle and relatively large kinetic energy.