Boom Supersonic sans Sonic boom

Boom Supersonic sans the sonic boom: The XB-1's quiet Mach 1 flight
If you've been keeping tabs on aviation news as of late, you saw that Boom Supersonic just recently broke the sound barrier with its XB-1 demonstrator aircraft. Oddly enough, no one on the ground heard a thing during its "boomless" cruise.
Experimental jet achieves supersonic flight, minus the boom
Boom Supersonic passed a major milestone last month when its XB-1 prototype became the first civil aircraft to break the sound barrier over the continental US. Less than a month later, Chief Test Pilot Tristan “Geppetto” Brandenburg has once again surpassed Mach 1 in the experimental plane while flying as high as 36,
Boom without the boom: Validation of quiet supersonic flight opens new uses for Greensboro-built planes
Boom Supersonic now says Overture can avoid sonic booms, potentially opening up overland flights even at Mach 1 or higher. This could be a big deal.
Boom! A fast and loud breakthrough: A supersonic jet breaks the sound barrier
Boom Supersonic’s XB-1 has broken the sound barrier, paving the way for faster commercial flights if future tests succeed.
Boom Supersonic's XB-1 jet breaks sound barrier 3 times on final test flight (video, photos)
Boom Supersonic's XB-1 pathfinder vehicle went out in style on Monday (Feb. 10), breaking the sound barrier three times on its 13th and final test flight.
Boom Supersonic: Our Flights Can Break Sound Barrier Without a Sonic Boom
During the second supersonic flight of the XB-1 technology demonstrator today, the jet exceeded Mach 1 three times without a boom being detected by microphones on the desert floor below.
Sonic boom breakthrough for planemaker trying to build the next Concorde gets Elon Musk's backing
Boom hopes its breakthrough will allow supersonic flights over land, making US coast-to-coast flights 90 minutes faster.
First independently developed jet breaks the sound barrier over the California desert
A sleek white aircraft has become the first independently developed jet to break the sound barrier. The XB-1 aircraft ...