Check out this great shot of a jet transiting the sun. It happens ca 8 seconds in the sequence.  What surprised me was the extent of the forward motion of the contrail vapors.  I always imagined that they had closer to a zero ground speed. This is a good visualization of the extent to which the aircraft does work on the atmosphere by accelerating some of it along the direction of motion.

This video was captured by a member of the Radio Jove community. He was shooting a solar prominence with a Coronado PST and a webcam when the jet passed through the field of view. (Obviously, he was not doing radio astronomy at the time.)

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