Falling Stars

10/01/2012
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Falling stars are tiny extraterrestrial dusts. They enter in our atmosphere at a speed of 70km/s.

Then they heat up and burn a fraction of a second and draw streaks of light in the sky. This trail of light is caused by the vaporization and ionization of the body, heating up the air in its path, which causes the combustion of the body leaving behind a trail of ionized gas: the plasma.

Stars formed drawings called constellations like the Big Dipper but Falling stars are vaporized completely before arrive on the Earth.

They are not a rare phenomenon. In fact, the Earth is constantly bombarded by cosmic fragments.

We esteem several hundreds of falling stars (more or less brilliant) ignite in the atmosphere every hour during the day or the night.

On a clear night, without moon, far from any light source, it is possible to observe meteors at any time of the year.

For the Greeks and Romans, each person was represented by a star. When someone dies, his star fell and became a falling star.

Today, we are used to make a wish when we see a shooting star.

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