Archive: https://archive.today/6MINA From the post: >>A newly released image shows the sound barrier being broken on February 10 as America’s first civil supersonic jet completed its second flight at speeds exceeding Mach 1. NASA teams on the ground used Schlieren photography to capture the shock waves around Boom Supersonic’s demonstrator aircraft XB-1 as it pushed through the air. “This image makes the invisible visible,” said Blake Scholl, founder and CEO of Boom Supersonic, in a press release. In order to capture the Schlieren images, Boom chief test pilot Tristan “Geppetto” Brandenburg positioned XB-1 at an exact time in a precise location over the Mojave Desert.