What is the legend of the comet?

Since ancient times, accidental comets have been painted with mystery and horror. Our people call it a "broom star". That it will bring disaster, hunger and war to the earth. When the famous Halley's Comet appeared in 1066. That was when William, Duke of Normandy, France, led an army to invade Britain. Later, she won in one fell swoop and established the Normandy dynasty. To commemorate this victory, Duchess William weaved this scene on a tapestry. On one side, a group of Normans pointed at the comet and smiled proudly. On the other side, King Harold of England sat on his throne and looked at the comet overhead, terrified.

But Edmund. Harley doesn't believe in these superstitions and legends. He is the director of Greenwich Observatory. 1682, when he was 26 years old, he saw a comet named after him. He used Newton's comet orbit calculation method to analyze the orbits of 24 comets with observation records since 1337- 1698. It is found that 153 1, 1607 and 1682 are strikingly similar in appearance, orbit and time interval. Therefore, in 1705, it is concluded that these comets are the repetition of the same comet, and it is predicted that this comet will be at 65438+. Later, Harley's prediction was confirmed, and the comet did return again on Christmas Eve of 1758. Unfortunately, Harley/Kloc-passed away 0/6 years ago and missed the meeting with it. In order to commemorate Halley's achievements, this comet was officially named "Halley's Comet", which is the first time that humans have predicted the date of return.

Halley's comet has returned twice in this century. The first time was in May of 19 10. The earth stayed on the huge tail of Halley's comet for several hours, and the brightness was like Mars, which made people feast their eyes. The second time, 1985- 1986, was far less spectacular than the last time. It was not until March and April of 1986 that people saw their faces over the southern hemisphere.

These two returns made Halley's Comet popular all over the world and became a household name. Yuzhe Zhang, a famous astronomer in China, said: "When Halley's Comet 19 10 returned, I was still an 8-year-old pupil. I was deeply moved by the sight of comets passing through the sky. This initial impression played a role in my future career in astronomy and asteroid observation and research. "

What is the scene that astronomers and astronomers are most concerned about when comets return?