Researchers are validating the aircraft's performance before propelling it to supersonic speeds.

A closer look at the reasoning behind the plane's iconic swing-wing mechanism.

The space agency released a video of its experimental aircraft performing a series of maneuvers as it soared over ...

Hypersonic fight start-up Hermeus is advancing production of its first supersonic-capable aircraft. The company has released images of the Quarterhorse Mk 2 prototype progressing through assembly, ...

The US taxpayer invested $1 billion in a supersonic plane that never took to the skies.

After World War II, as early supersonic military aircraft were pushing the boundaries of flight, it seemed like a foregone conclusion that commercial aircraft would eventually fly faster than sound as ...