i watched a documentary on some very wierd lightning strikes, seeming to come from space, and some aiming out into space, or something confusing.
what it boiled down to was increased danger for anything attempting to reach orbit getting struck by that particular lighting which would almost vaporise anything it hit, being stronger than the standard lightning we see hitting the ground.
the sheer luck the photographer had that set it all off was amazing, then i think it was university students and equipment that recorded the first almost usable footage of the phenomenon. the documentary followed the nasa guys journey to find the answers, after he had personally witnessed the phenomenon but couldn't prove it.