What is the science behind Sun, Moon and Earth behind Chandra Grahan?

Publish Date: 09 Nov, 2022 |

A lunar eclipse is an astronomical event. According to science, the process of the Earth's shadow falling on the Moon and the obstruction of sunlight reaching it is called a lunar eclipse. Simply put, a lunar eclipse occurs when the Earth comes in a straight line between the Moon and the Sun. 

A scientific explanation of the Lunar eclipse

Scientifically speaking, the Earth revolves around the Sun and the Moon revolves around the Earth. In the midst of this rotation, there comes a time when the Earth comes between the Moon and the Sun. In this situation, these three come in a straight line. Due to this, the rays of the Sun do not reach the Moon and due to this, an eclipse occurs on the Moon. In simple language, it can be said that when the earth covers the moon, then understand that a lunar eclipse has taken place.

Not every full moon is Eclipse

The special thing is that the lunar eclipse always happens on the full moon date. The Hindu calendar says that every month there is a full moon date. However, an eclipse does not occur on every full moon. The Moon is tilted about 5 degrees in Earth's orbit. This tilt prevents the Moon from passing through the Earth's shadow. 

Because of this, on most occasions, the Moon passes either above or below the Earth. Because of this, there is no lunar eclipse on every full moon date. But, as soon as the moon passes through the shadow of the earth, there is a full moon on that day. Sun, Earth, and Moon all come in a straight line. Because of this, there is a lunar eclipse.


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