The iconic horns of the devil comet, 12P/Pons-Brooks, were missing after its latest eruption. But the comet's coma, or atmosphere, did have a green glow and sported a shadowy streak instead.

Here’s how it works. The "devil" comet's distinctive horns were first spotted after a major eruption on July 20. (Image credit: Comet Chasers/Richard Miles) ...

The "devil" comet's distinctive horns were first spotted after a major eruption on July 20. (Image credit: Comet Chasers/Richard Miles) A volcanic "devil comet" that is racing toward Earth erupted ...

A "Devil Comet," twice the size of size of Mt. Everest and has an active ice volcano, will barrel across Earth's view in spring of 2024, scientists say.

The sign of the horns, also known as devil horns or metal horns, is ubiquitous in heavy metal, hard rock and beyond. Music fans, especially concertgoers, come across it frequently.