A number of colors have been reported, including yellow, green, and red.

As objects shatter, there will be flashes of light and explosions.

When a meteorite falls, it is common to hear an explosion, splinter, or rumble sonic boom from the shock wave caused by the major fragmentation event.

The sound can be heard over a wide area, with a radius of hundreds of kilometres or more, sometimes whistles or hisses can be heard, and tails of soot are often seen lingering in the atmosphere for several minutes after a fireball has passed.

The meteoroid is heated on its way into the atmosphere, and its surface melts and undergoes an experience of ablation.

In the process, they can be sculpted into a variety of different shapes, appearing on the surface and leaving a shallow fingerprint-like depression known as an air mark.

If the meteoroid remains in a fixed position and does not tumble forward for a period of time, it may form a tapered nose cone or a heat mask.

When it slows down, it eventually solidifies the melted surface layer into a thin molten crust.

In most meteorites, this layer is black (in some grainless meteorites, the molten crust may be very bright in color). In stony meteorites, the heat-affected zone is only a few millimeters deep at most, and in iron meteorites, it is a better conductor of heat, and metal structures up to 1 cm (0.39 in) below the surface may be affected by high temperatures, but reports vary.

Some meteorites have been reported to have the sensation of being burned hot to the touch after landing, while others are cold enough to freeze the water into frost.

Many meteorites from the fall, such as the Bjurbole, Lake Tajish meteorite, and Buzzard Coulee, have been found in icy lakes or seas, perhaps they were not hot at the time of their fall.

Meteoroids break apart in the atmosphere, and meteorite rain can form, with meteorites falling from a few to thousands.

The area where these meteorite showers fall is called the dispersion zone, which is usually in the shape of an ellipse, with the direction of the long axis parallel to the direction of the meteor's flight.

In most cases, the largest meteorite in a meteorite shower will fall at the farthest distance of the dispersal area.

Meteorites have had a small chance of hitting humans and animals since records began in modern times, but there have been few human casualties.

"What's the best meteorite to collect?"

Jiulong was most interested in this, of course, he was embarrassed to say what meteorites were the most valuable, for fear of arousing Zhang Gaogong's disgust.

"The more expensive meteorites in the world are meteorites from the Moon and Mars, about 6,000 US dollars, that is, 30,000 yuan per gram, and cheap desert meteorites have a high degree of weathering, which is only 1 yuan per gram, and if there are many witnesses when they fall, the price is 40 yuan to 50 yuan per gram. ”

Zhang Gaogong saw Jiulong's thoughts, and directly answered what was the most valuable.

"How can lunar meteorites and Martian meteorites be determined? With so many meteorites falling from the sky, will it be difficult to tell the difference?"

Even if these two meteorites are valuable, it is impossible to judge, and they are all empty, so Kowloon has this question.

"Lunar meteorites can be divided into two categories: volcanic rocks and sedimentary rocks, lunar basalt is one of the main rocks that make up the moon, the color is black, white, dark purple, purple-red, green, dark green (commonly known as black treasure green), gray-green, yellow, brown-yellow, mixed colors, etc.

"Patchy structure and almond structure with biotite present.

"Common sulfides found in lunar meteorites are meteorite iron, pyrite, chalcopyrite, croistonite, sulfurinite and minerals that are not yet known.

"The transparent molten crust on the surface of a lunar meteorite belonging to volcanic rocks is formed by the melting of transparent materials in lunar rocks at high temperatures.

"Other melting phenomena such as crusts, melt lines, flow lines, grooves, craters, and edges and corners formed by directional falls are evident.

"The transparent molten crust characteristics of lunar meteorites are the hallmarks of lunar meteorites.

"Because it has been on Earth for too long, the possibility of the loss of the transparent molten crust of the lunar igneous meteorite that has been severely eroded by wind erosion is greatly increased, and this phenomenon usually does not affect the final confirmation of the lunar meteorite.

"Granular, massive clustered double-crystal aggregates plagioclase and microporkite fused breccia are common in lunar meteorites.

"The colors are colorless, white, dark gray, flesh red, pink, yellow, light yellow, green, showing glass luster transparent to translucent.

"Tabular or oblate columnar single crystals are often white, and needle-like olivine is visible within tabular single crystals.

"The characteristics of breccia plagioclase in lunar meteorites are an important scientific basis for confirming lunar meteorites.

"The meteorite of Mars meteorite people call him 'Martian meteorite', Martian meteorite is also a very rare meteorite species, the more well-known are '84001' Martian meteorite containing organic matter, and a kind of olivine meteorite meteorite called 'quasicrystal', and oxygenated iron and silicon water molecule hybrid olivine porphyry 'Itinite Martian meteorite'.

"At present, among all kinds of meteorites in China, the meteorite value called black treasure green is higher than that of the lunar and Martian meteorites, because at present human beings cannot judge its source, it is very likely to be from the planet produced during the Big Bang period of the universe 15 billion light years away, which is very helpful for the study of the universe boundary and formation, through the atmosphere process, after high-speed rotation fell into the earth's desert, so it is well preserved, the molten shell is relatively complete, the surface is bright, the whole body is black and green, with a high collection and research value, the most well-preserved 2750 grams of black treasure green meteorite in China was acquired by a mysterious collector in Beijing at a price of 40 million yuan, The meteorite is not a lunar and Martian meteorite, the source of which planet is unknown, the world is the only one, now the valuation is more than 60000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

"There is a general state of mistrust in the domestic market, and many people have completed their purchases through international channels.

"The distrust is not only because there are too many fake meteorites in China, but also because of the inflated prices," Zhang Gaogong said, "The price of domestic meteorites has risen very fast, and the competition for rare and good-selling high-end meteorites has become increasingly fierce, rising 10 times in the past two years, while some ordinary meteorites have also risen by about 1 times." ”

Zhang Gaogong said: "As a sample of scientific research, the value of meteorite should be reflected in scientific research, it is not like gold and jade, the collection value and commercial use are very strange, it is a hyped concept."

"Jingle bell!"

At this time, He Gang's phone rang, and he quickly picked it up: "Mr. He, at about 7 o'clock last night, a dazzling light crossed the night sky of our village, and the bright light crossed the sky, and the night sky of our village was suddenly illuminated by a strong light, and the bright light disappeared after a few seconds, I guessed that it was a meteorite falling, because two loud noises were heard about two seconds after the bright light disappeared! Mr. He, do you want to come and have a look?"

The other party's voice seemed urgent.

"Zhang Gaogong, Master Zheng, there is a situation, my friend from Gangtou Town, Fuqing called and said that there may be a meteorite landing, do you want to look for it together?"