Using the power of math and science, Vsauce determined that an average-sized fist performing a Rising Dragon Fist would apply enough force to decapitate a normal human being. Then they built a dummy to test their work.
You always see gotta-go-fast superheroes punching people when they fight bad guys. And, yeah, a fist delivered at the speed of sound will probably do the job of crushing evil. But a guy like Quicksilver doesn’t even need to hit a person to mess ‘em up real bad.
So, technically, this is what it would look like if the Moon were a disco ball AND orbited Earth at the same distance as the International Space Station, i.e. roughly 420 kilometers (260 miles) above the surface of the Earth. But that doesn't make it any less incredible looking.