Meteor shower - bright and noisy phenomenon

Since Ancient times, falling from the sky fiery stone had led the people into a state of awe. The people gave the natural phenomenon of mystical significance, linking the rockfall with divine signs.

Currently, despite the unraveling of the nature of the meteor shower, people continue to be surprised and afraid of such natural phenomena. They say, this punishment for the sins of the people. Scientists explain that the meteor shower – simple, but rare on Earth. The fact that on other planets of the Solar system meteorites strike the surface more often. Why? Let's face it.

Meteor shower. What it is

In short we can say that this thread rocks falling to earth from the sky. Education and description of a meteor shower is the following: an asteroid hits in the upper atmosphere and begins to be attracted by the Earth. When it reaches the denser shell of the atmosphere, it breaks into many small pieces. Now to the surface of the Earth flies a stream of stones, which may be mineral or metallic composition. The car is divided into parts, because it consists of many small pieces. This is the natural structure of the substance of many meteorites. Part of the meteorites have dimensions from a few microns to several centimeters. In these rocks between dense formations are more loose mineral layer.

During the flight, the car is experiencing a lot of friction about the Earth's atmosphere. It heats up so much that it begins to burn in the streams of air. Glow large car can be brighter than sunlight reaching the Earth. This changes the outer surface of the falling body. It formed the figure of those air currents that passed through the car. Is burned in air layers of the huge mass of the substance: up to tens of tons. So until the earth reaches a very small part of what was in the atmosphere.

Protective shell of the Earth

Our atmosphere is pretty well protects the planet from falling on her phone Quite a small number of cars that had invaded the atmosphere, reaches the Earth's surface. Other planets the atmosphere there. This explains why they are more often "throws" the stone rain.

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Scientists

Something drifted leaves in the earth's crust, the craters that are carefully being studied by scientists all over the world. In the craters is always a large number of meteorite fragments. Found pieces are investigated for chemical composition, and analyze the structure of the meteorite, it's assumed that its origin. Meteorites are highly valued among the scientific community. The fact that the meteor shower – it fell to the Ground pieces of the cosmos, which is fraught with many more mysteries. Much easier to pick up the pieces themselves managed to fly to us than to fly people into space for the study material.

Tsarevskiy meteorite

In 1922, the territory of modern Volgograd region has fallen meteorite rain weighing more than a ton. Witnesses told that the car in the air and a loud rumble and then the explosion occurred (a meteor shattered into pieces). At that time also valued finds of bodies in space. However, to find a meteorite researchers for a long time failed. Found tsarevskiy meteorite accident in 1968 during ground works.

Sikhote-Alin meteorite

In 1947 the Earth's atmosphere burst into a very large car. Scientists estimate it weighed 1500 – 2000 tons. In the atmosphere of the boulder broke into thousands of pieces. The ground collapsed about 60 – 100 tons of cosmic matter. The shock wave beat out glasses, pulled down the roof. Meteor shower showered the Ussuri taiga for several square kilometers. The crater of enormous size. Photos of the meteor shower fails to capture. The picture shows only craters extant.

The largest crater had a diameter of 28 meters. Maximum depth – 6 meters. Of course, the forest suffered considerable devastation. The trees that day pulled out by the roots.

Meteor shower called Sikhote-Alin meteorite, as it was later called scientists. He was one of the many asteroids orbiting the Sun.

Chemical composition

Hardware – basic chemical element of the meteorite (94%). It also discovered Nickel, cobalt, sulfur, phosphorus and many other elements in small quantity. There are in this "messenger of heaven" and precious metals.

In addition to the iron meteorites, and stone accented fireballs.

Allende

In 1969 the territory of Mexico fell carbonaceous meteorite. It is the largest stone from the sky, which has such a chemical composition.

Regarded this finding to the fact that it is the most ancient body of people objects. The age of meteorite fragments, which are currently scattered in different museums of the world is over 4.5 billion years. Scientists found within the Allende new mineral pangit, which, apparently, is not on our planet.

Meteor shower-bright and spectacular natural phenomenon. It is alwaysdrew the attention of local residents, as well as scientists and lovers of the mysteries of the cosmos. As it turned out, the composition of asteroids is markedly different from the composition of the planet Earth. Huge chunks of pure iron and new minerals are studied with the greatest care.