 Some authors have written that Huitzilopochtli tossed Coyolxauhqui's head into the sky where it became the Moon, so that his mother would be comforted in seeing her daughter in the sky every night, and that her scattered brothers became the Southern Star deities.It is difficult to verify these variations of the narrative with 16th century sources.On February 21, 1978, a group of workers for the Mexico City electric-power company came across a large shield-shaped stone covered in reliefs while digging.