Boom Supersonic sans Sonic boom

Supersonic planes will burn significantly more fuel than current aircraft, resulting in higher emissions of carbon dioxide, ...
The scaled-down prototype, nicknamed the "Baby Boom", broke the sound barrier for the first time during a test flight over ...
Instead, the Boeing 747 entered commercial service in 1970 ... They plan to fly their X-59 supersonic aircraft over US ...
It was a step toward reviving supersonic commercial travel, which has been on hiatus since the Concorde jet was grounded more than two decades ago. Boom Supersonic has contracts with at least ...