But that’s the case with Penn­DOT’s Highland Park Interchange Project for which locally based, award-winning artist Brian Peters designed unique sound barrier walls. The wavy design is ...

Boom Supersonic and NASA just dropped an incredible photo of the XB-1 breaking the sound barrier over the Mojave Desert. Using Schlieren photography, they captured air distortions that are usually ...

(CNN) — Now here’s one for the mantelpiece. 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 ...