The more expensive meteorites in the world come from the moon and Mars, which is about 6,000 US dollars, or 30,000 RMB per gram. Cheap desert meteorites have a higher degree of weathering, 65438 yuan +0 Yuan Yuan per gram. If there are many witnesses when it falls, the price is from 40 yuan to 50 yuan per gram.

At present, among all kinds of meteorites in China, the meteorite called black sapphire is more valuable than the meteorite of the moon and Mars, because at present, human beings can't judge its source, and it is likely to come from the planet produced during the Big Bang 65.438+0.5 billion light years away, which is very helpful for studying the boundary and formation of the universe. In the process of crossing the atmosphere, it crashed into the desert of the earth after high-speed autobiography, so it is well preserved, the molten shell is relatively complete, the surface is bright and dark green, and it has high collection and research value.

Zhu Jin, director of the Beijing Planetarium, said, "As a scientific research sample, the value of meteorites should be reflected in scientific research. Unlike gold and jade, its collection value and commercial use are weird and it is a hyped concept. "

Scientists say that our planet receives 50,000 tons of such "gifts" every day. Most of them have been burned at an altitude of 10 to 40 miles above the ground, and it is difficult to find them even if they fall to the ground. They run in the universe, because there is no other protection, so they are directly radiated and violently changed by various cosmic rays, and their own radioactive heating cannot make them change greatly. So its own record is reliable. Its research scope is quite extensive, such as high-energy physics, celestial evolution, geochemistry and the origin of life.

Extended data:

Meteorite refers to the meteorite residue falling to the ground, which is composed of minerals such as iron, nickel and silicate, also known as meteorite. Also refers to meteorites containing more or all rocks. A large number of organic substances such as ammonia, nucleic acids, fatty acids, pigments and 1 1 amino acids were also found in meteorites with high carbon content. Therefore, people think that the origin of life on earth has a considerable relationship with meteorites.

It is found that there is an asteroid belt between the orbits of planets, Mars and Jupiter in the solar system, which is the hometown of meteorites. These asteroids run in their own orbits, constantly colliding, and sometimes being knocked out of orbit and heading for the earth. When they enter the atmosphere, they will rub against them and give off light and heat. This is a meteor. Meteors enter the atmosphere, producing high temperature, high pressure and internal imbalance, and then explode to form meteorite shower.

The unburned material falls to the earth and becomes a meteorite. A crater with a depth of 170 m and a diameter of 1240 m was discovered in Arizona, USA. There is also a big pit with a diameter of 300 kilometers in Antarctica. A giant crater with a diameter over 1000 km was found in the middle of the Atlantic Ocean.

References:

Baidu encyclopedia-meteorite