Beautiful skies, with an airplane leaving a broken trail behind it. The clean break implies different atmospheric conditions in the small area where the trail breaks, until conditions return to normal later on and the trail persists. Then, quickly, the trail ceases once more.
Another explanation is that this plane is carrying tanks of aerosols instead of human passangers, as well as equipped with a patented system which emits it on-demand into the skies in an attempt to manipulate the weather.
I subsribe to the latter.
Notice where the trail continues for a small time towards the bottom left of the image. I cannot accept the official explanation, which is the atmosphere differs so wildly in these pockets of air to cause condensation to form so heavily in the exact same area of the sky.