A Colorado-based company said it broke the sound barrier three times without generating a sonic boom that reached the ground.

Boom will now shift its attentions toward developing Overture, its supersonic passenger jet.

Aerospace startup Boom says they've proven quiet supersonic flight is possible with their passenger airplanes after a successful second test flight.

During the second supersonic flight of the XB-1 technology demonstrator today, the jet exceeded Mach 1 three times without a ...

The same ocean that once brought prosperity to Stone Town now poses an existential threat, as rising sea levels and extreme ...