"April 1985, 50,000 feet over the Irish Sea, this is the only picture ever taken of a Concorde flying over Mach 2. The photo itself was taken by Adrian Meredith, a prestigious British photographer, from a Panavia Tornado, a British fighter of the Royal Air Force. Meredith had to be quick and precise, because flying that high he had less than 4 mins to take the shot. The fighter couldn't keep up with the Concorde beyond that time. If you look at the horizon, the Earth's curvature begins to show"