Solar and lunar eclipses

The solar eclipse, called "Tiangou Food Day" by the people, is an astronomical phenomenon. New moon (the first day of the first lunar month), the moon walks between the sun and the earth. If these three celestial bodies are exactly or almost in a straight line, then the moon will completely or partially cover the sun and an eclipse will occur. Eclipses are divided into total solar eclipse, annular solar eclipse and partial solar eclipse.

An eclipse is when the moon turns away from the sun, that is, the earth is between the sun and the moon. At this time, the three celestial bodies are almost in a straight line, so the earth blocks the light from the sun to the moon, and the moon enters the shadow area of the earth. The area between the moon and the earth will be blocked by the earth because of sunlight, and a part of the moon will be missing. Eclipses can be divided into three types: partial eclipse, total eclipse and penumbral eclipse.

Up to five eclipses can occur every year in the world, at least twice. Eclipses may occur three times a year, usually once or twice, or not at all. A solar eclipse can be seen half a world away, but it can only be seen in a small area. Therefore, there are more opportunities to watch solar eclipses than lunar eclipses, and fewer opportunities to watch total solar eclipses.