It's not a big mystery. There is cloud seeding that is done by airplane (weathermodificationinc. com) or by cannon… then you have the military that is throwing small metal particles for the radar/antiradar (and probably other things - it's called chaff) and most likely some experiments (biological?) It's all very well documented. There seems to be a magnetic pole shift happening, so some area are more vulnerable to the sun than others. So my guess is that there is an intent to shield the Earth also.