How may China have found a way to travel across the world in an hour?
But hypersonic means traveling at or above Mach 5. That’s a missile or drone traveling over 6,120 KPH, which is about 3,837 MPH.
What are hypersonic planes?
* “Hypersonic” was sort of that buzzword among governments several years ago.
* A plane traveling at the speed of sound is