On this day, 28 years ago, March 9, 1997 (February 1, 1997, the lunar calendar), a total eclipse and a comet appeared in Mohe at the same time. American amateur astronomers Haier (left) and Pope On March 9, 1997, from 9:07:40 to 9:30, a rare astronomical event of a total solar eclipse occurred in Mohe County, Heilongjiang Province. In the black sky that appeared in an instant, the comet Hale-Bopp was looming. More than 80,000 Mohe residents and more than 3000 Chinese and foreign experts and astronomy enthusiasts experienced this magnificent scene of the universe on the spot. A total solar eclipse is a rare phenomenon when the moon moves between the sun and the earth, blocking the sun. This total solar eclipse occurred north of Sbik, Russia, and the Altai Region of Xinjiang, my country, swept through Mongolia, my country's Mohe, and finally ended in the Arctic Ocean. Mohe, the only city on the solar eclipse belt, has become the best observation point in the world due to its good basic conditions and moderate solar altitude angle. At the same time, the comet Hale-Bopp, which only appears in the morning and dusk every day, has also risen to the zenith and is visible from the top. my country's last total solar eclipse in this century encountered the comet Hail-Bopp, which returned once in 2400. This "tryst of the century" has aroused great interest among Chinese and foreign scientists and astronomy enthusiasts. During the process from the initial loss of the solar eclipse at 8:02:34 today to the recovery at 10:19:45, scientists used optical, radio and other means to collect a large amount of data. Seven academicians of the Chinese Academy of Sciences, including Ye Shuhua and Wang Daheng, also attended the scene. At the end of the century, the comet "Hale-Bopp" and the northern lights align together. On July 23, 1995, two American amateur astronomers, Hale and Pope, were observing the Sagittarius globular cluster M70, accidentally discovered a new comet. The calculations of preliminary observation data shocked astronomers: it turned out that it was in a very special orbit, and its orbital surface was almost perpendicular to the plane of the solar system, that is, it would bypass the sun from south to north and then fly deep into space, so this The comet will provide us with raw information on the physical state of the Sun's poles and the special orientation of the edge of the solar system. What is even more eye-catching is its unusual brightness. When it was discovered, it was 1 billion kilometers away from Earth, and its brightness was already magnitude 10, 250 times brighter than Halley's Comet at the same distance when it returned in 1985. Later, astronomers calculated that when the alternate star passed perihelion, its brightness would reach-1.7, which is brighter than Sirius, the brightest star in the entire day, so it was called the Great Comet of the End of the Century. Comet Hale-Bopp lived up to expectations, and its shape development and brightness were basically consistent with estimates: the comet core had experienced at least five bursts and had a short and thick dusty tail. The gas tail appeared from January to February 1997 and was long from the beginning. And maintain two main and tail lines until April. It passed the perigee on March 23, 1997, passed the perihelion on April 1, and reached-0.8 at its brightest. "Hail-Bopp" is the first comet in human history to fully utilize CCD (image recording using electronic scanning system) technology for long-term observations. As a result, the quality of the photos has been greatly improved.