Re: I'm still wondering
While I'd be the first to admit some weird electrical stuff goes on at the edge of the atmosphere, I'd have to see a lot more evidence, plus an expert's opinion on the photo taken by that guy. I have already seen some naturally occurring photographic phenomena that could account for the appearance of a "flash" or a "glow" on such a photo.
As one example, motorized film rewinding in dry, cold weather can cause static streaking on film that resembles lightning.