If it is, answerMug hasn't scared me so much as the scariest-to-me-Twilight Zone episode, "The Midnight Sun," I believe. The Earth leaves its orbits and starts falling toward the sun. Something like that. Everything and everyone keeps getting hotter. I only saw it once as a rerun on TV.
While-and-after watching that episode, as a youngster I remember looking out the window and being afraid of the sky. Great stuff, actually! :)
But if aM scares me like that -- maybe I'll leave the site. :)