Information about lunar eclipses, knowledge about lunar eclipses

For a long time in ancient China, lunar eclipses were regarded as "heavenly dogs eating the moon", and even if the heavenly officials later observed the waxing and waning of the sun and the moon from the perspective of celestial phenomena, they were also associated with human affairs under the thinking of "the unity of heaven and man", and were considered to be a kind of "catastrophe".

Since the waxing and waning of the sun and the moon are connected with the secular world, it is natural that we cannot but cherish it, and it is not a joke to ignore the eclipse of the sun and the moon, and if you don't do it well, you will lose your head. For example, Xihe, the official of the Xia Dynasty, did not notice the arrival of the solar eclipse because he drank alcohol during work, and the common people were frightened, so the monarch Zhongkang was furious and executed Xihe.

In terms of time, the earliest correct explanation of solar and lunar eclipses was Liu Xiang, a scholar in the Western Han Dynasty, who explained in about 20 BC that the sun eclipse the moon obscures it. Old Master Liu said that the solar eclipse is that the moon walked over and blocked the sun.

A lunar eclipse is a special astronomical phenomenon in which when the Moon moves to the shadow part of the Earth, the area between the Moon and the Earth will be obscured by the Earth's rays, and a piece of the Moon will be missing. The Sun, Earth, and Moon at this time happen to be (or almost) in the same straight line. Lunar eclipses can be divided into three types: partial lunar eclipses, total lunar eclipses, and penumbral lunar eclipses.

Lunar eclipses can only occur around the 15th day of the lunar calendar.

There are three types of lunar eclipses: partial lunar eclipses, total lunar eclipses, and penumbral lunar eclipses.

A partial lunar eclipse occurs when the Moon enters only part of the Earth's umbra; And the diameter of the Earth's umbra is still twice that of the Moon. Therefore, when the center of the Earth and the Moon are roughly in the same straight line, the Moon will completely enter the Earth's umbra, resulting in a total lunar eclipse.

A lunar eclipse, also known as a lunar eclipse, is an astronomical phenomenon in which the part of the moon illuminated by the sun's rays cannot be partially or completely illuminated by direct sunlight when the moon moves into the earth's shadow (the shadow is divided into two parts, umbra and penumbra), so that observers located on the earth cannot see the ordinary moon phase.

The record of a lunar eclipse in Mesopotamia in 2283 BC is the earliest in the world, followed by the record of a lunar eclipse in China in 1136 BC. The phenomenon of lunar eclipses has been driving the development of human understanding.

Lunar eclipse: A lunar eclipse is a special astronomical phenomenon that refers to the area between the Moon and the Earth when the Moon moves to the shadow part of the Earth, because the sunlight is blocked by the Earth, and a piece of the Moon is missing. The Sun, Earth, and Moon at this time happen to be (or almost) in the same straight line.

Lunar eclipses generally occur on the 15th or 16th day of the summer calendar.

Solar eclipse: A solar eclipse, also known as a solar eclipse, is the movement of the moon between the sun and the earth, if the three are exactly in a straight line, the moon will block the sun's light to the earth, and the black shadow behind the moon falls on the earth, and the solar eclipse phenomenon occurs. Solar eclipses are divided into partial solar eclipses, total solar eclipses, annular solar eclipses, and total annular eclipses.

You can't look directly at the sun when observing a solar eclipse, otherwise it will cause temporary blindness, and in severe cases, permanent blindness.