Eleven miles high, above 90 percent of Earth's atmosphere, the ride was rarely rocked by turbulence, and the view of our planet's curvature was spectacular. Concorde's landing gear was state-of ...

A. W. Stevens, contains an earlier photograph taken by him in the Andes from a height of 21,000 ft. which also shows the curvature of the horizon.

Engineers say it could hit this speed by saving energy and climbing to over 100,000 feet (30,000 metres) - high enough for ...

A private company aiming to build the first supersonic airliner since the Concorde retired more ... "high enough to see the curvature of the earth below," according to the company.