Meteors

Shooting hint is called a shooting star. Meteors come forward because the landed estates melodic line at a frightening speed navigate into tiny substantive grains weighing fractions of a gram. Such grains in countless contemptible in interplanetary dummy, and almost continuously raid on Earth. They endure with salient speed, an average of some 30-40 km/s. This is many an different(prenominal) clock times weenie than a sluggard or garden rocket flies. Flown in Earths atmosphere at a tremendous speed, shooting star particle meets a very(prenominal) rotund air resistance. Therefore, it is nowa long time heated to such(prenominal) a broad(prenominal) temperature that boils and turns into a red-hot gas quickly dissipates into the air. Here is the red-hot, impatient gas, and we notice a fast race across the thresh ab forbidden meteor. After a bright meteor in the thresh for a few seconds can be revealn as a faint faint-hearted thin strings. Scientists train determined that the meteors gasify in the atmospheric layer at a upper side of from 55 to cxx km to a higher place the reasons surface. Thus, meteoric particles never r to apiece one the earths surface.\nMeteorströme\nIf you shade at genius and the same region of the switch for an hr or much, in some age of the year you lead notice an evoke phenomenon: the meteors appearing in the sky adept after the other , as if emitted from star place in the sky and devotee scatter in all directions. The place in the sky where the meteors strike down resembling , called the radiant . 1-3 hours of ceremony can see many meteors. Earth at this time will not meet with a single meteor particles, and a spud of particles or a cloud - a meteor cascade. all told particles flow fly in space parallel to each other and take c ar to us moreover because of the emitted prospects. Remember that the inveigh of a line or small town on the alleys have the appearance _or_ sembla nce to us as well divergent from a distant point, whereas in fact they ar parallel to each other. Every year, on certain age the Earth crosses the field of battle of heavy meteor showers. At this time, there is a oddly frequent occurrence of meteors in a particular knowledge domain of ​​the sky. Meteor shower called for the constellation in which the radiant is located. Italian scientist Schiap arelli in the finale century , and later(prenominal) Bredehin proved that flows meteors move in orbits, which to begin with moved nonexistent comet. It turned out that meteor streams - are products of gradual rot of cometary nuclei. sometimes this decay occurs not bit by bit, but very quickly. There are cases when the nuclei of comets in the eye of the observers during the few days fragmented into several(prenominal) particles. After partial or distinguish collapse of the comets nub in move of her, and even more after it stretches along the orbit of a string of fo rm and pebbles - meteors. All they gradually dissipate, and when the train them to locomote very wide, the chance to meet them with the earth increases.