by BMAONE23 » Mon Feb 23, 2009 5:30 am
I've noticed this myself on several occations. What you are seeing is the Shadow created by the Contrail. It only happens when the relative angle of the sun the trail and your perspective line up. The Sun was likely up and to the left at the time the image was taken. Although the trails seem to get stretched and distorted over a relatively small ammount of time, their shadows still appear to be straight.
I've noticed this myself on several occations. What you are seeing is the Shadow created by the Contrail. It only happens when the relative angle of the sun the trail and your perspective line up. The Sun was likely up and to the left at the time the image was taken. Although the trails seem to get stretched and distorted over a relatively small ammount of time, their shadows still appear to be straight.