in which "a sonic boom refracts in the atmosphere and never reaches the ground. This effect is achieved by breaking the sound barrier at a high enough altitude, with exact speeds varying based on ...

Boom Supersonic is partnering with NASA to capture specialized photography during supersonic flight testing for the XB-1 demonstrator aircraft. The partnership, announced in early March, will use a ...

Serbian officials have denied allegations security forces deployed a military-grade Long Range Acoustic Device.