A couple of months ago, I was enjoying one of our annual southeastern meteor showers, the Geminids, with my family under a clear winter sky. The question arose, "Why do stars twinkle?" I grasped at my words, finding fault in what I was trying to say while I was saying it (as I admittedly do sometimes).
Jack Tuszynski is an award-winning photojournalist and the Publisher of the Family Life Publications group of magazines.