To this day, nobody completely understands how the ionoshpere will react to being anally raped by energy rays. Remember the large hardon (see what I did there?) collider, and how they're throwing atoms at each other just to see what will happen? This is basically it, except there's no 50 million to one chance of something bad happening. The odds are far, far less. Together with the ozone layer, the ionosphere protects the us from being fried by the sun. We're being so pissy about global warming destroying the ozone layer (VERY, VERY slowly) this could destroy the ionosphere in seconds.