Comet orbits can be plotted in reverse, so show me where an astronomer said it's possible that a comet hit Earth at that time.Why? I'm not suggesting any divine action. I'm just saying IF there is evidence of a comet, it could be reasonably suggested to be the source of the Sodom story. And it would be just as natural as an earthquake (or a forest fire).
And I never said Sodom was destroyed by a forest fire.