lunar eclipse

The lunar eclipse occurs when part or all of the moon's cross section is covered by the shadow of the earth. It happens when the earth is between the sun and the moon in the same straight line, so that the sun's rays can not reach the moon because it is blocked by the earth.

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With another explanation, the lunar eclipse occurs when the moon is in opposition to the sun. But since the slope of the orbital plane of the moon against the ecliptic plane is 5 ° [1], then not every moon's opposition to the Sun will result in a lunar eclipse. The intersection of the orbital plane of the moon with the ecliptic plane will give rise to 2 pieces of intersection called the node, the point at which the moon cuts the ecliptic plane. This lunar eclipse will occur when the moon is in opposition to the node. The moon takes 29.53 days to move from one point of opposition to another. So it should, if there is a lunar eclipse, will be followed by the eclipse of the Sun because the two nodes are located on the line that connects between the Sun and the earth.

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Actually, in the event of a lunar eclipse, often the moon can still be seen. This is because there is still a sunlight that is deflected into the moon by the earth's atmosphere. And most of these deflected rays have a spectrum of red light. That is why at the time of the lunar eclipse, the moon will look dark, can be red copper, orange, or brown.

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The lunar eclipse can be observed with the naked eye and is not harmful at all.

When the lunar eclipse is in progress, Muslims who see or know the eclipse are disunnahkan to pray the eclipse (salat khusuf).

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