How do solar eclipses come about and how do they happen?

Solar and lunar eclipses are typical examples of light propagating in a straight line in celestial bodies. It is not every time a solar eclipse occurs when the moon moves between the sun and the earth, and two conditions need to be met for a solar eclipse to occur. First, solar eclipses always occur on New Year's Day (the first day of the lunar calendar).

Eclipses are not guaranteed on all new suns, because the Moon's orbit (the white path) and the Sun's orbit (the ecliptic) are not in the same plane. The plane of the white and the plane of the ecliptic have an angle of 5°9. A solar eclipse can occur if both the Sun and the Moon move near the intersection of the white and ecliptic at the New Moon, and the Sun is at a certain angle from the intersection (eclipse limit), which is the second condition to be met.

Since the orbits of the Moon and the Earth are not perfectly circular, and the distance between the Sun and the Moon and the Earth is sometimes near and far, the shadow formed by the sun's rays being obscured by the Moon can be divided into umbra, pseudoumbra (formed when the Moon is far away from the Earth) and penumbra on the Earth. The observer is in the umbra range and can see a total solar eclipse; An annular solar eclipse can be seen in the pseudoumbra range; In the penumbra range, only a partial solar eclipse can be seen.

There are many high mountains on the surface of the moon, and the edge of the moon is untidy. When the valley on the edge of the moon fails to completely cover the sun at the moment of eclipse or the arrival of light, the uncovered part forms a luminous area, like a crystal "diamond"; The pale red ring around it forms the "ring" of the diamond ring, and on the whole, it looks like a diamond ring inlaid with brilliant gemstones, called a "diamond ring". Sometimes many particularly bright rays or points of light are formed, as if a string of pearls is set around the sun, called "Bailey beads" (Bailey was a French astronomer).

Whether it's a partial solar eclipse, a total solar eclipse, or an annular solar eclipse, the time is very short. There are also limited areas where solar eclipses can be seen on Earth, because the Moon is relatively small, and its umbra is also relatively small and short, so the umbra does not sweep wide and for a short time on the Earth, and because the average length of the lunar umbra (373293 km) is less than the average distance between the Moon and the Earth (384,400 km), for the whole Earth, annular solar eclipses occur more often than total solar eclipses.

An eclipse is a natural phenomenon in which the sun, the earth, and the moon happen to be or almost in the same straight line (the moon is between the sun and the earth), and the light from the sun to the earth will be partially or completely blocked by the moon, resulting in a solar eclipse. It should be noted that since the orbits of the Sun and the Moon in the sky are not in the same plane, but at an angle of about 5°, only if the Sun and the Moon are near the two intersections of the ecliptic and the white path, respectively, will have a chance to join in a straight line and produce a solar eclipse. The Moon blocks out the sun's rays, creating shadows on Earth and making some or all of the sunlight unacceptable to certain areas.

The extent to which an observer sees the sun is obscured depends on where they are relative to the moon's shadow. If an observer is in the penumbra they will see a partial solar eclipse, while a person in the umbra will see a total solar eclipse.

A solar eclipse is when the moon circles the earth and turns between the sun and the earth, if the sun, the moon, and the earth are exactly lined up or close to a straight line, the moon blocks the sunlight that shoots to the earth, and the black shadow behind the moon falls on the earth, and the solar eclipse phenomenon occurs. People in the shadow of the moon on the earth began to see the sun gradually weakening, the sun surface was obscured by a round black shadow, when the sky turned dark, all the brightest stars and planets could be seen in the sky, and after a few minutes, the sun gradually appeared from the edge of the moon's black shadow, and began to produce light and recircle.