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August 26, 2016 23:11

Why do stars fall ?

What is a star?This celestial bodies, which are, were, or will go thermonuclear reactions.In fact, they are huge glowing balls of gas, which are formed from helium and hydrogen as a result of gravitational contraction.It should also be noted that the temperature of the substance in the depths of these balls can be millions of degrees Kelvin, and on the surface - a few thousand degrees Kelvin.The energy of these celestial objects formed by the fusion reactions of hydrogen into helium, which occur at high temperatures.

Now back to our main topic.You probably could not just watch as the stars fall from the sky.There is even a legend, according to which all desire, thought in this moment, will come true.However, if you look in more detail at this point, it appears that those objects that we take for shooting stars, they are not at all.In fact it is very small stones flying in outer space.Once they are in close proximity to the Earth, facing the air shell of the planet, that is so strongly heated that s

tarts very strong light.Soon, however, object in the sky burns and goes out, and before reaching the Earth's surface - they are called meteors.However, in some cases, pieces of stones still reach the Earth's surface - we call them meteorites.It is worth noting that almost all celestial bodies are part of the atmosphere at a speed of 10 to 72 kilometers per second.A small body, flying at a speed of 25 km / s, burns with little or no residue.If the speed is lower, then the object can reach the surface, but it often changes the trajectory that is due to its inhibition.

By the way, most of the meteorites that have fallen on our planet, is small in size - typically their weight from a few grams to several kilograms.The largest ever found weighs about 66 tons, it is called Goba and stored in Namibia (South Africa), not far from the farm Hoba West, where he fell about 80 thousand years ago.It attracts thousands of tourists to see every year.

continue.According to scientists, 24 hours to the Earth falls about 6-7 tons of meteorites, but most of them are so small that even notice their appearance in the night sky is almost impossible.

If meteoritic body breaks down into fragments, then this leads to the loss of the meteor shower, the strongest of which was held in the night from 12 to 13 November 1833 - it lasted for almost ten hours.During this time, it fell more than 2000 meteorites of various shapes and sizes.

Finally - a very interesting point.Even the closest star is at a very great distance from our planet, so the attraction between them is negligible.If you imagine that these two objects closer, the Earth would fall onto the star, and not vice versa - from the star attraction in the tens or even hundreds of times more.So