Orion is one of the zodiac signs. A big constellation in the starry sky on a winter night is also the most gorgeous constellation in the whole day. Located between Gemini, Unicorn, Canis Canis and Taurus, its northern part is submerged in the Milky Way. The main body of the constellation consists of four bright stars, Betelgeuse and Betelgeuse, forming a quadrilateral. In the center of the quadrangle, there are three bright stars in a straight line, which should be a belt tied around the hunter's waist. In addition, under these three stars, there are three little stars, which are swords hanging on the belt. The whole image is like a brave hunter, with his head held high, which is very spectacular and has been noticed by people since ancient times. Under the hunter's sword, the naked eye can see a blue and white hazy nebula, which is the famous Orion nebula. At the left end of the hunter belt, there is a dark nebula shaped like a horse's head, which is the famous horse's head nebula. Besides these famous nebulae, Orion has many gas nebulae, and it can be said that the whole constellation is rippling in the gas nebulae.
It is said that Horion is a good hunter with great arm strength. Themis, the goddess of the moon, fell in love with him, but Apollo, the elder brother of the goddess of the moon, disagreed. Deliberately let Al themis kill Horien by mistake. Afterwards, Artemis themis was very sad and asked Zeus for help. Zeus sympathized with the two lovers, so he promoted Horien to the sky and became a beautiful Orion.