China’s rumored sixth-generation J-36 is being marketed as a “need for speed” stealth fighter, with reports pegging it at roughly Mach 2.5. -That figure is unconfirmed, but it raises the real question ...

Maverick, Tom Cruise's Pete "Maverick" Mitchell pushes the experimental Darkstar beyond Mach 10. But how fast actually is ...

Humankind was once determined to break the sound barrier, as it was considered the ultimate achievement in speed. But our technology didn't stop there, as we've built experimental vehicles that can ...