Orion is one of the largest constellations in the sky. It is in a group of very bright stars and constellations. An easy way to find this constellation is to look for a part of it that represents "Orion's Belt". That part is made up of 3 bright stars (Alnitak, Alnilam, Mintaka) in line. The Orion constellation has 81 visible stars. Rigel is the brightest star in it. It is supposed to look like the warrior Orion from Greek mythology. The constellation has other names in different cultures: it is mentioned under a Hebrew name in the Book of Job.