Does Comet Hale Popper really have two comets? Let's see what the astronomical phenomena say! Comet Hale Popper is probably the most popular comet in history. According to the observation records of NASA, comet hale-bopp has two beautiful blue and white tails, which can be easily seen even in areas with serious light pollution. Two-Comet Nucleus Theory 1999, a paper assumes that comet hale-bopp has two comets to explain the form of dust it emits. This paper is purely inferential. The author did not observe and make its dual-core structure, but he estimated that one of them was about 30 kilometers in diameter and the main core was about 70 kilometers. They are about 180 km apart and revolve around each other in a period of 3 days. This paper has caused great controversy among astronomical observers. Even with the powerful Hubble telescope, there is no evidence of double comet nuclei. Because when a comet splits into several pieces, their distance will gradually drift away; And so far, no comet has a stable binuclear; On the other hand, due to the gravitational perturbation of the sun and planets, the orbits of the double comet nuclei often change and separate. From the end of 1997 to the beginning of 1998, it was observed that the light of its comet nucleus appeared double peaks through adaptive optical devices. However, whether this phenomenon is caused by double comet nuclei is still controversial. Comet Hale-Popper is actually an unusually bright comet, which may be thousands of times brighter than Comet Haley. It reached perihelion on April 1997. Because of its huge size, at least more than 40 kilometers, its proximity also brought panic to people-when it entered the orbit in the solar system, it caused people to speculate that aliens would come to the earth. Comet Hale Popper is probably the most popular comet in history. According to the observation records of NASA, comet hale-bopp has two beautiful blue and white tails, which can be easily seen even in areas with serious light pollution. There is also speculation that alien lovers and UFO fans think that the orbit of comets has changed too much, not because of planetary gravity, but because comets are intelligent spacecraft from Orion.