Why is orians belt called orians belt?

Answer 1

Orion's Belt or the Belt of Orion, is in the constellation Orion. The three bright stars forming the belt are Alnitak, Alnilam and Mintaka. As with all constellations, stars and planets, most were named many years ago, as humans tried to work out the Universe and their place in it. Though you can look into a night sky and see Orion's Belt, some other stars are in the far, far distance, while some stars appear to be less far away. In other words, the stars in the night sky are not in a single 2D plain, but in a 3D plain stretching out into infinity.
To actually answer the question: Orion was a hunter in Greek mythology. He was the son of the sea-god Poseidon and Euryale, daughter of Minos, King of Crete.
As there are so many myths and legend (Roman and Greek, and others), with one myth leading onto another, and often depicted in the night sky, I must force myself to stop here!