Missed to 2033, what is "super blood moon"? Take you to understand the science behind strange astronomical phenomena.

On the evening of May 26th, if the weather is fine, everyone will be lucky enough to watch the performance of "Super Blood Moon". "Super Blood Moon" is a combination of "Super Moon" and "Blood Moon", which is naturally extraordinary and really can't be missed. Explain what "super blood moon" means first.

Many people may not realize that when the moon revolves around the earth, it does not run in a circular orbit, but in an elliptical orbit. Accordingly, the distance from the moon to the earth has perigee and apogee. The perigee of the moon is about 45,000 kilometers shorter than the apogee.

Moreover, the long axis of the elliptical orbit is still spinning, with a period of about 8.85 years, which is called precession. That is to say, perigee and apogee are also around the earth. When the perigee coincides with the full moon, such a moon is called a super moon. The so-called "super" actually means to look "special" (cross out) and be "slightly" bigger.

The perigee moon is larger than the apogee moon 12%. That sounds great. In fact, unless the two moons are juxtaposed, the naked eye can't see the difference.

We all know the principle of eclipse, that is, the moon enters the shadow of the earth, and the time of eclipse must be at the full moon. Because the orbit of the moon has an angle of about 5 with the plane where the earth and the sun are located, that is, the ecliptic plane, an eclipse may not necessarily occur during the full moon. Only when the moon is in the shadow of the earth during the full moon will an eclipse occur. This is why there is no eclipse every month, because the probability that the sun, the earth and the moon are on the same line is not high.

During the total lunar eclipse, theoretically the moon should be black; But this is not the case. The moon is red. This is the so-called "blood moon".

This is because the earth's atmosphere scatters blue light, the so-called Rayleigh scattering, so the sky looks blue; But red light can penetrate the atmosphere. The red color on the surface of the moon is the red component of sunlight refracted by the earth's atmosphere, reflected to the surface of the moon and then reflected back. This is why the surface of the moon is red during the eclipse.

It means you can't miss it After all, this is a double superposition of the super moon and the blood moon, and it is not a sight that appears every month and every year. If we miss this super blood moon, it won't happen again until 2033. In addition, this super blood moon is very suitable for viewing in East Asia. If you don't go to see it, you're really sorry to God.

At the beginning of the eclipse, corresponding to the area between the first red line in the above picture, only the United States, Central and South America and Australia can be seen. When the total lunar eclipse occurs, it is the range corresponding to the yellow line and the green line, and it is also the most wonderful moment. You can only see the area from the eastern midwest to the eastern part of China. In other words, not all of China can see the wonderful part of the total lunar eclipse, and only some areas in the east are lucky enough to see this spectacle. If your earth can just see this "super blood moon", you won't miss it, will you?

The specific timetable is as follows:

If you want to take pictures, take a tripod and adjust the camera settings. I believe there will be a big wave of "super blood moon" in various media at that time!

# Almighty Creator #