American company Boom Supersonic just broke the sound barrier with a civilian plane. What exactly is supersonic travel, and ...
About 35,000 feet (10,670 meters) over the Mojave Desert, northwest of Los Angeles, Boom Supersonic's XB-1 became the first ...
The flights were expensive, mainly shuttling business people and the rich ... can be dissipated to manageable levels. They plan to fly their X-59 supersonic aircraft over US cities and gauge ...