Photo of Airbus A380 Superjumbo
March 12th, 2010
Airbus A380 Superjumbo taking off at Vancouver International Airport. Airbus A380 Superjumbo at YVR was uploaded by dan.barnes.

Airbus A380 Superjumbo taking off at Vancouver International Airport. Airbus A380 Superjumbo at YVR was uploaded by dan.barnes.

Click to the photo to read up on this. Very interesting.
What happens visually though is still debated. It seems from the picture above that an unusual cloud forms. One theory is that a drop in air pressure at the plane causes water vapor to condense and form the cloud.
Seeing a Sonic Boom - How often? was uploaded by edhiker.