What is an eclipse? Rotation or revolution?

Eclipse is an astronomical phenomenon, which occurs around the 15th lunar month. Not all full moons will be covered. Eclipses are also a rare sight, which is well worth watching. So what is the next eclipse from the perspective of constellation knowledge? Is the solar eclipse rotating or revolving?

What is an eclipse?

Eclipse is a special astronomical phenomenon, which means that when the moon moves to the shadow of the earth, the area between the moon and the earth will be blocked by the earth because of the sunlight, and the moon will be missing. At this time, the sun, the earth and the moon are exactly (or almost) on the same straight line. Eclipses can be divided into three types: partial eclipse, total eclipse and penumbral eclipse. A solar eclipse can only occur around the fifteenth day of the lunar calendar.

There will be a shadow on the earth far away from the sun, which is called the earth shadow. The earth's shadow is divided into umbra and penumbra. The umbra refers to a place that is not exposed to direct sunlight, while the penumbra is only exposed to some direct sunlight. In the process of orbiting the earth, the moon sometimes enters the shadow of the earth, resulting in an eclipse. When the whole moon enters the umbra, a total lunar eclipse will occur; But if only a part of it enters the umbra, only a partial lunar eclipse will occur. Total lunar eclipse and partial lunar eclipse are umbra eclipses.

Is the solar eclipse rotating or revolving?

The formation of lunar eclipse and solar eclipse is the revolution of the earth, and the speed, existence and rotation of the revolution of the earth have an influence on the occurrence of lunar eclipse and solar eclipse.

Total solar eclipse is a kind of solar eclipse, that is, an astronomical phenomenon in which the sun is completely blocked by the moon in some parts of the earth. Total solar eclipse can be divided into five stages: initial loss, food, food, light production and recovery.

Time of appearance

On the fifteenth and sixteenth days of the lunar calendar, the moon runs in the opposite direction to the sun. At this time, if the centers of the earth and the moon are roughly on the same straight line, the moon will enter the umbra of the earth and produce a total lunar eclipse. If only a part of the moon enters the umbra of the earth, a partial lunar eclipse will occur. When the moon enters the penumbra of the earth, it should be a penumbral eclipse, but it is not called an eclipse because the brightness drops very little, so there are only two kinds of eclipses: total eclipse and partial eclipse. Eclipses always occur in sight (full moon), but not every time, which is the same as not every new moon has an eclipse.

The phenomenon that the moon is completely or partially covered by the shadow of the earth. A solar eclipse usually occurs on the 15th or 16th day of each month in the summer calendar, when the earth moves between the sun and the moon, but not every ecliptic can happen, because there is an intersection between the ecliptic and the ecliptic, so only on a moonlit night, when the moon continuously takes photos of the solar eclipse, the earth's shadow can be seen near the intersection of the ecliptic and the ecliptic, can observers on the earth observe the solar eclipse. Generally speaking, the number of eclipses occurs twice a year. The diameter of the sun is much larger than that of the earth, and the shadow of the earth can be divided into umbra and penumbra.

The diameter of the earth is about four times that of the moon. In lunar orbit, the umbra diameter of the earth is still 2.5 times that of the moon. When a part of the moon is always covered by the umbra of the earth, a partial lunar eclipse will occur. When the moon completely enters the umbra of the earth, you can see the total lunar eclipse. If the moon enters the penumbra, the sunlight will also be blocked. This phenomenon is called penumbral eclipse in astronomy. However, because the sun in the penumbra is still very strong, the penumbra eclipse is not easy to distinguish with the naked eye in most cases. However, in fact, penumbral eclipses often occur. According to the observation data, the percentage of penumbral eclipse, partial eclipse and total eclipse in each century is about 36.60% and 34.46%.