Why there is a solar eclipse

Why there is a solar eclipse

Solar eclipse – one of the most impressive natural phenomena which the person can observe. No wonder that throughout all history people paid it special attention. Sudden disappearance of the Sun in the middle of white day caused superstitious horror, was perceived as something mystical and threatening with various troubles.

The sponsor of placement P&G Articles on the subject "Why There Is a Solar Eclipse" How to define distance to planets That on a reverse side of the Moon How to protect plants Long time the nature of eclipses tried to explain with the most improbable ways, beginning from a penalty of gods for human sins and finishing with the mythical monster devouring a sun. And only thanks to development of astronomy and other natural sciences scientists could give, at last, the distinct description of the mechanism of solar eclipses.

The real reason solar, as, however, and lunar, eclipses that in space there is nothing motionless. Our planet rotates round the Sun, in turn, its satellite the Moon rotates round Earth. And from time to time there are situations when all three celestial bodies appear on one line. And the Moon is between Earth and the Sun at this time, covering it in whole or in part.

In other words, the solar eclipse is no other than the Moon shadow which fell to Earth surface. As in comparison with the extent of the Sun and Earth the Moon is very small, and the shadow occupies it in the diameter of everything of about 200 km. And it means that the solar eclipse can be observed not everywhere, but only in quite narrow strip on the way of a lunar shadow.

Astronomers distinguish total and partial solar eclipses. It depends on visibility conditions from Earth. If the observer is in a strip of a lunar shadow about 270 km wide, he will be able to see how the Sun completely disappears, turning into the small black circle surrounded with the shining cover of the wrong form. This radiant circle round the darkened Sun call a solar crown. During a total eclipse even in the heat of day on the earth there comes the gloom, air temperature goes down a little, stars become visible. However the full phase of a solar eclipse lasts not for long, and literally in a few minutes everything reverts to the original state around.

The partial eclipse can be observed if to be near a strip of a lunar shadow. In this case from Earth it seems that the Moon passes not precisely on the center of a solar disk, and touches only its edge. The sky thus darkens much more weakly, stars are also not visible. As it is possible to observe a partial eclipse at distance even to 2 thousand kilometers from a strip of a lunar shadow (a zone of a total eclipse), chances to see this natural phenomenon much above.