There was no lunar eclipse, but there was a blood moon

When the moon's light enters the atmosphere, the light with a shorter light wave is absorbed and reflected by the atmosphere, and the red light with a longer light wave can enter the surface through the atmosphere, so we see the "blood moon".

No, it's a lunar eclipse, it's just that the Earth's atmosphere refracts the sun's rays onto the moon, in fact, when the moon is all red, it is the ultimate lunar eclipse.

A blood moon is a stupid idea of the ancients. Modern science can explain the beautiful scenery of the "red moon" after the lunar eclipse, and we can enjoy it with confidence...

It's refraction! The moment when the center of the full moon is closest to the center of the Earth's umbra, the surface of the moon before and after is reddish copper or dark red (applicable to total lunar eclipses). (Reason:.)

When the sunlight passes through the earth's atmosphere, it is refracted to deflect the light inward, but the degree of deflection of each light is different (dispersion), and the red light has the greatest degree of deflection, which is closest to the earth's shadow and is reflected on the moon; In addition, the amount of light deflection varies depending on the amount and location of dust and clouds in the atmosphere, so the Moon is dark red, copper, or orange during a total lunar eclipse. In the same way, due to the refraction of the atmosphere, the morning sun and the setting sun are not white, but orange or red depending on the altitude due to the degree of refraction of the atmosphere. ）

A red moon usually occurs during a total lunar eclipse. Whenever there is a total lunar eclipse, the Moon turns red, also known as a "blood moon".

If we think of the earth as the center, the moon and the sun revolve around the earth, but they do not rotate on the same plane, so we regret that we rarely communicate with each other.

But when the moon, the sun, and the earth are in the same plane and occlude each other, a solar or lunar eclipse occurs, where the lunar eclipse is divided into a semi-lunar eclipse and a total lunar eclipse, and when a total lunar eclipse occurs, the moon's color will turn red.

The meaning of the lunar eclipse in ancient times

In ancient times, the lunar eclipse was a fierce moon in people's hearts, and the appearance of a lunar eclipse was often accompanied by a bad omen, and there would be unjust cases.

By observing the heavens to know the movement of the sun, moon and stars, and the good fortune and evil, and guiding the agricultural activities in the year of judging the model, it has become the practice of ancient people to govern the country. The ancients admired the Taoist theory of yin and yang and the five elements, the moon is originally feminine, and every night of the blood moon is the time when the yin energy is at its peak, the entrance to the underworld is opened, and countless people will take the opportunity to go to the world.

At the same time, there will be great injustices, or major natural and man-made disasters, which will kill many people.

In folklore, there is also another theory that in order to punish humans, the tengu will slow down the moon eating and digging little by little, and at this time, people need to beat gongs and drums and set off firecrackers to drive away the tengu, which is called "tengu eating the moon". There are many more related legends, most of which were combined with feudal religion as a means for feudal monarchs to rule the people.

Solar and lunar eclipses are both self-imposed phenomena of Li Ran's heavenly burial. Among them, the solar eclipse is when the moon moves to the middle of the earth and the sun, casting its own shadow on the earth, which seems to be the sun is missing a piece, so the folk call it the tengu eclipse sun.

This has a certain relationship with the rotation and revolution of the earth, when turning to a certain angle of bending, and forming an angle with the sun and the moon, thus causing this different phenomenon of incompatibility.

Because a Blood Moon and a Total Lunar Eclipse go hand in hand, and a total Lunar Eclipse and a First Lunar Eclipse cannot occur at the same time, a Blood Moon will not occur at the First Moon.

This is because a part of the moon will hide behind the earth when it is moving, so that this part will not be able to get sunlight.

Why is a total lunar eclipse called a "blood moon"?

Lunar eclipse is one of the well-known astronomical phenomena, "Tengu eating the moon" is a description of this phenomenon, of course, there is no Tengu, this phenomenon occurs because when the moon orbits to the shadow part of the earth, the area between the moon and the earth will be blocked by the earth, making the moon appear to be missing, this is what everyone often calls "lunar eclipse". When a lunar eclipse occurs, the sun, the earth, and the moon are roughly in the same straight line, and the process of the official lunar eclipse is divided into five stages: initial loss, eclipse, eclipse, light, and roundness.

Lunar eclipses can be divided into partial lunar eclipses, total lunar eclipses, and penumbral lunar eclipses. A total lunar eclipse is a type of lunar eclipse, when the moon, the earth, and the sun are completely in a straight line, the entire moon walks into the shadow of the earth, and the surface of the moon is dim, forming a total lunar eclipse. During a total lunar eclipse, the moon is generally red, often referred to as a "blood moon".

So, why does the moon turn red?

We know that when a total lunar eclipse occurs, the moon completely enters the shadow of the earth, and the sunlight cannot directly irradiate the surface of the moon, but the sunlight passing through the earth's atmosphere will be refracted to deflect the direction of the light, but the degree of deflection of each light is different, in the visible light, the wavelength of red light is the longest, the refraction angle is the smallest, and it will shoot more to the surface of the moon; These rays are reflected by the Moon and scattered as they enter the Earth's atmosphere, while the longest wavelength of red light still reaches the human eye through the atmosphere. As a result, the Moon in which a total lunar eclipse occurs is mostly red.