What is the bow sign?

One of the northern constellations. Located between Cassiopeia, Andromeda, Leopard, Auriga and Taurus. In the late autumn night, you can find the "M"-shaped Cassiopeia in the northern sky, or Andromeda in the northeast of Pegasus Square, and then along the Milky Way, you can see how many stars are arranged in an arch, which is Perseus. This big bow is called "The Bow of Poerxiusi". In the center of the bow string of this big bow, there is 1 second-class star-Daling V, also called "magic star". It is an eclipse star, and its brightness is every 2? From 87 days of 2? 3 Wait until 3? 5 waiting for change. In the northwest of this constellation, near Cassiopeia, there are two open clusters. Because of the short distance, double star cluster is formed, which is a fuzzy spot to the naked eye. Perseus also has a famous meteor group, which appears most frequently in mid-August every year.

Legend has it that the hero Poerxiusi is the son of Zeus. Athena, the goddess of wisdom, asked him to try to get the head of Medusa, a witch, and promised to elevate him to heaven when it was done. Medusa's head was covered with poisonous snakes. Anyone who sees her will turn to stone. With God's help, Poerxiusi put on flying shoes with wings and an invisible helmet. With the reflection of the bronze shield, she avoided her eyes and nodded and cut off the monster's head. Then he rode a flying horse that jumped out of the witch's body and left the danger. On the way back, I saved Princess Andromeda and married her. Finally, he dedicated Medusa's head to the goddess of wisdom. The goddess fulfilled her promise and took Poerxiusi to the sky and became Poerxiusi. At the same time, it also raised the princess to the sky and became Andromeda. Therefore, they are always close in heaven. Five of Perseus are the heads of the witch Medusa.