Space.com on MSN4d
Boom Supersonic's XB-1 jet flew in front of the sun so NASA could take this incredible shock wave photo
"This image makes the invisible visible — the first American made civil supersonic jet breaking the sound barrier." ...
Popular Mechanics10d
A Plane Just Achieved Supersonic Flight Without the Sonic Boom
Boom Supersonic, a commercial aviation company behind the sonic boom-less XB-1, posted an image showing its experimental plane breaking the sound barrier. Captured during a successful test flight ...