When the sun, the earth, and the moon are in exactly the same or almost the same line (the moon is between the sun and the earth), the sun’s rays to the earth are partially or completely blocked by the moon. This creates a solar eclipse. It should be noted that since the orbits of the sun and the moon in the sky are not on the same plane but at an angle of about 5°, only the sun and the moon are located near the two intersections of the ecliptic and the Baidao respectively. A straight line, producing a solar eclipse. The moon blocked the sun’s rays and caused shadows on the earth, making it impossible for some regions to receive some or all of the sun. As for how much the observer sees the sun, it depends on where they are located relative to the shadow of the moon. If observers are in the penumbra (see diagram), they will see a partial eclipse, and those in the shadow area will see that the eclipse of the total solar
eclipse is a special kind of astronomical phenomenon. When the moon runs to the shadow of the Earth, the moon and the earth will be blocked by the sun because of sunlight. Now we see a missing moon.
In other words, the sun, the earth, and the moon at this time happen to be (or almost) in the same straight line, so the light that shines from the sun to the moon will be covered by the earth.
In terms of the earth, when the lunar eclipse occurs, the direction of the moon and the moon will be 180 degrees different from each other, so the eclipse must occur in ‘look’ (ie around the 15th day of the lunar calendar). It should be noted that since the orbits of the Sun and the Moon in the sky (called ecliptic and Baido) are not on the same plane, they have an angle of about 5 degrees, so only the Sun and the Moon are located at the two intersections of the ecliptic and Baidao respectively. Nearby, there is an opportunity to make a straight line, creating an eclipse.