Who remembers the solar eclipse in the 1980s?

The solar eclipse in the 1980s was an annular eclipse, which occurred on the morning of1September 23rd, 987. It can be found in Yining, Kuitun, Hami, Ejina Banner, Yinchuan, Ningxia, northwestern Shaanxi, Shanxi, Henan, southwestern Shandong, Anhui, Jiangsu, Zhejiang and other places in Inner Mongolia.

In fact, it is a normal phenomenon to have a solar eclipse from summer solstice to Sunday. Eclipses occur at least twice a year, which is not a rare astronomical phenomenon. What is special this time is that the eclipse is relatively large, that is, it is particularly close to the total lunar eclipse, called the Phnom Penh solar eclipse. And this "edge" is extremely narrow and rare, which is the real special feature of this eclipse.

In addition to the summer solstice, the winter solstice will also have an "occasional" solar eclipse. From the observation point of view, the observation effect of solar eclipse in winter solstice is better, because it is assumed that the distance between the earth and the moon is the same and the sun is closer to the earth in winter solstice, so the annular eclipse zone is wider and there are more areas to feast your eyes on.

In fact, whether it is the summer solstice or the winter solstice, the observation of solar eclipse should be "concrete analysis of specific problems", because the distance between the earth and the moon, the distance between the sun and the earth and the direction of the moon should be considered, and it is impossible to generalize.

Extended data:

Causes of total solar eclipse:

The moon goes around the earth, and the earth goes around the sun. Among the three stars, two planes will be formed, namely the ecliptic plane and the ecliptic plane. There will be at least two opportunities every year. When the moon rotates between the sun and the earth, the sun, the moon and the earth will rotate on the same straight line.

A solar eclipse will be staged. Interestingly, when the moon is close to the earth, the distance between the earth and the moon is 4 10 times. At this time, from the earth, the moon will be slightly larger than the sun, and then a total solar eclipse will occur.

If the moon is just on the far side of the earth when the eclipse occurs, the distance between the earth and the moon will be 370 times that between the earth and the sun. At this time, the moon looks a little smaller than the sun and can't completely block the sun. What we see is an annular eclipse.

In the next 100 year, there will be wonders of solar eclipse in most parts of China, with total solar eclipse and annular solar eclipse accounting for almost half, and there will be more and more annular solar eclipses after hundreds of millions of years, with fewer and fewer total solar eclipses and eventually disappearing. Because under the influence of tidal force, the moon is moving away from the earth at a speed of 3.8 centimeters per year, so from the earth, the moon will keep getting smaller.

If there are still humans on the earth after 600 million years, then humans will find that the moon can no longer completely cover the sun, the total solar eclipse will completely disappear on the earth, and all solar eclipses will become the annular eclipse you see today.

Baidu encyclopedia-annular eclipse