Coma
From Equestripedia, the Archives of Equestria!
A Coma was a small cloud of material that tended to surround comets. Twilight Sparkle wrote about them in her essay, The Study of Comets.
A Coma was a small cloud of material that tended to surround comets. Twilight Sparkle wrote about them in her essay, The Study of Comets.