Okay, so I was watching a late night episode of Megadisasters because as usual I couldn't sleep. [seems I am a chronic insomniac! lol]. Anyhow... this one peaked my interest for a particular reason. As some of you may have guessed by my internet alias [skycomet] I'm a huge fan of astronomy and cosmology and this particular episode was about "comet impact disasters." I have always loved the show M…