The Cosmic Comet He-Man and the Masters of the Universe : Season 1 Episode 20

Skeletor has gained control of the Cosmic Comet above Eternia, and intends to use it to blow open the jaw bridge of Grayskull. He-Man, Teela, Man-At-Arms, The Sorceress and Orko set out to stop Skeletor's scheme, with the help of Zagraz, a wizard with power over comets.