It comprises three stars ( 42 Orionis , Theta Orionis , and Iota Orionis ) and M42 , the Orion Nebula , which together are thought to resemble a sword or a scabbard .
Orion 's Sword is an astronomical asterism in the constellation Orion .
Orion 's Sword comprises three stars ( 42 Orion , Theta Orionis , and Iota Orionis ) and M42 , the Orion Nebula , which together are thought to resemble a sword or a scabbard .
Orion 's Sword is an astronomical asterism in the constellation Orion .