www.youtube.com/watch?v=WsK-...
www.youtube.com/watch?v=WsK-...
www.youtube.com/watch?v=vbV-...
www.youtube.com/watch?v=vbV-...
Boom Supersonic's XB-1 just became the first civil aircraft to break the sound barrier not once, not twice—but three times this morning.
www.popsci.com/technology/b...
Boom Supersonic's XB-1 just became the first civil aircraft to break the sound barrier not once, not twice—but three times this morning.
www.popsci.com/technology/b...