The image shows a clear blue sky with a long, white trail of smoke or vapor trailing behind it. The trail appears to be from an airplane or a jet, as there is a small plane visible in the top right corner of the image. The smoke is curving upwards, creating a straight line that extends from the bottom of the trail. The sky is a light blue color, and the smoke is a darker shade of blue. The image is taken from a low angle, looking up at the trail and the airplane.