It has long been observed that the nuclei of periodic comets are depleted, with every turn they glow weaker. Not once was there a division of cometary nuclei into two parts or more. This destruction produced or solar tides, or collisions with a meteor shower. The comet, discovered by the Czech scientists Bilim (Biloy) in 1772 was observed with repeated returns with the seven-year period. In 1846 its core collapsed, and it turned into two weak comets, which after 1852 was not observed. When in 1872, according to the calculations, the missing comet should pass near the Earth, there was rain of “falling stars”. Since November 27 this phenomenon is repeated every year, though less effectively. Small solid particles of the disintegrated nucleus of a former comet Bilogo stretched along its orbit, and when the Earth crosses the stream, they fly in the atmosphere and evaporate. A number of other meteor showers.

Meteoroids — the remains of comets, visible only at the time of evaporation are called meteors. The width of meteor showers is much greater than the size of the generated nuclei.

Photographing the path of the same meteor in the starry sky, as he is projected to observers, separated from each other by 20-30 km, determine the altitude at which the meteor appeared. Most meteoroids begin to glow at heights of 100 to 120 km and has already completely evaporated at a height of 80 km . Continue reading

The region of formation of comet Tempel 1 and the model of solar system formation
"Our observation was aimed at studying the chemical composition of the comet Tempel 1," says Michael Mumma (Michael Turner) from space flight Center NASA Goddard (NASA Goddard Space Flight Center).…

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The planets and moons in orbit of the Sun The largest planet in the Solar system. this is a Jupiter belonging to the class of gas giants. Ancient astronomers were…

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Long-term manned space missions is now impossible
The answer to the question of how in the coming years will be Russia's contribution into the process of full exploration by the inhabitants of the Earth, not yet clear…

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