Sometimes there are rare sights in the sky, such as the red moon. What is the red moon in the sky?

What is the red moon in the sky? When a total lunar eclipse occurs, a red moon usually appears. Violet, blue, green and yellow light have shorter wavelengths and are absorbed by the thick atmosphere. Only red light with longer wavelength can penetrate and refract to the surface of the moon behind the shadow of the earth, so we can still see the red moon hanging in the sky and the shadow of the earth. The red moon is also called the blood moon. Generally speaking, it is a red moon in the sky. The blood moon is a miracle.

Ancient legend in China: The red moon is the coldest phase, which indicates weakness, evil, resentment and violence in the world; Europeans believe that the blood moon will awaken the dark magic! Indians believe that the blood moon indicates disaster.

But in fact, because the moon has no atmosphere, the corona can be observed when there is a total solar eclipse on the earth; On the contrary, because the earth has an atmosphere, we can observe the earth's atmosphere when there is a total solar eclipse on the moon, and this atmosphere happens to be red (this is similar to the sunrise or sunset we observed on the earth).

In other words, when there is a total solar eclipse on the moon (this is exactly the total lunar eclipse on the earth), the half moon facing the earth is not completely dark, but as red as the morning/evening on the earth-of course, the moon in the total lunar eclipse is red from the earth. I think it must be spectacular to see the earth from the moon at this time. It should be a black disk with a big red halo around it.

Eclipses have been taboo in geomantic omen since ancient times and are regarded as ominous signs. In the east, because the sun symbolizes grace and the moon symbolizes punishment, an eclipse means that the country will be lightly killed and the people will be free. In other words, the technique of prayer can be avoided.

The eclipse begins in the first half of the month, which is debauchery for you; From the middle, it is the failure of the prime minister; Fundamentally, this is the universality of failure. Three days of raw food, the whole country mourned; After eating from ten to fourteen, the army got up; Eat fifteen, and the world will die. Spring grain, poor harvest, general death; Summer grain, drought; Autumn grain, soldiers; Winter grain, soldiers lost.

In fact, the "red moon" may appear at any time. When the moon is usually low and close to the horizon, the sunlight it reflects will be affected by the earth's atmosphere, so there is a certain chance of a "red moon", but the moon at this time is not necessarily "round" or will appear when people are not paying attention. As for the "red moon" produced during the total lunar eclipse, the main reason is that the earth blocked the sunlight during the total lunar eclipse, and only a part of the sunlight was refracted by the earth's atmosphere and shone on the moon, thus showing a "red moon" situation.