Boom Supersonic sans Sonic boom

A startup wants to revive the Concorde for the generations of flyers that missed out, without the noisy boom and the up to ...
Boom Supersonic says its XB-1 aircraft achieved supersonic flight without an audible sonic boom on the ground below. CEO ...
Boom Supersonic’s XB-1 has broken the sound barrier, paving the way for faster commercial flights if future tests succeed.
Boom Supersonic will break the sound barrier again Monday, after a successful flight last month. On Feb. 10, Boom Supersonic ...