I totally, when I first saw this photo, thought it was a still from the film Star Trek Generations.
What are we looking at? A lightning bolt, close up, taken with an x-ray camera. You can tell that most of the x-rays emitted by the lightning is at the tip, where it's really bright.
Wow. Dude, are we in the fucking future? Taking portraits of lightning now? Where the hell is my jetpack?
Anyway, this is what I first thought the pic was showing:
See? We're totally in the future.