Hypersonic ping.
BTTT
Forgive me for my ignorance here, but I have a stupid question:
Why is supersonic speed necessary to be able to venture into space?
I mean, if I could fly a Piper Cub in a straight line up to a height of, say, 25,000’, what would prevent me from going even higher, especially when you consider the fact that the earth’s gravitational pull on the plane will diminish the higher you go?
I’m just curious, OK?