Eclipsese (Solar and Lunar)

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Solar eclipse:

A solar eclipse occurs when the moon passes between the sun and the earth and blocking the sun from view. At such a time these three celestial objects are on the same plane and in one line. Hence the place on the earth where the moon’s shadow falls, experiences a solar eclipse. This shadow is of two types. The central portion of the shadow is darker and the periphery is light. In the area of dark shadow on the earth, the sun becomes completely invisible. This condition is known as total solar eclipse. However, during the same period, at the places where the shadow is lighter, the sun appears partially covered. This condition is described as partial solar eclipse.  Total solar eclipse is seen in a very limited region of the earth.

Sometimes the moon is in apogee position. This means it is at its farthest from the earth. As a result, the deep shadow of the moon does not reach the earth, therefore only an illuminated edge of the sun is seen in the form of a ring. This is called annular eclipse.

When Solar Eclipses occur?

A solar eclipse occurs on a new moon day, but not on every new moon day. If and only if the sun, the moon and the earth are in the same plane and fall in one line, the solar eclipses occur.  The maximum duration of a total solar eclipse is 7 minutes and 20 seconds.

Lunar eclipse:

A lunar eclipse occurs when Earth passes directly between the sun and the moon.  At this time, it is necessary that the all three of them are in the same plane. On a full moon day, the moon’s path of revolution passes through the thick shadow of the earth. If the moon is totally hidden within the shadow, then it is a total lunar eclipse and if only a part of the moon is in the shadow, then it is a partial lunar eclipse.

When lunar eclipses occur?  

A lunar eclipse occurs on a full moon day, but not on every full moon day.  A lunar eclipse occurs if and only if the sun, the moon and the earth are in the same plane and fall in one line.  The maximum duration of a total lunar eclipse is 107 minutes

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