I was aware that sonic booms happen when something moves faster than the speed of sound, and found out that Cherenkov radiation is emitted is when something moves faster than light, and then I found out that beings fighting at the speed of light would ignite the atmosphere, so I got curious and asked what would happen to onlookers to a fight happening at the speed of light.
Yeah we’d all die, onlookers and everyone else.
I was curious about how speed can be measured (in these fictional settings) so as to explain how it’s calculated that they’re moving FTL, and the explanation was that they can travel between planets and moons faster than light travels; as for whether or not they’re FIGHTING at these speeds, admittedly there’s no way of proving this (unless there’s a principle you could see at play), additionally if they move faster than light, how can they see each other as they fight; even if they could sense one another, they can’t sense androids and they fight those guys in the main storyline
Ah, I actually didn’t know this one (I’ve never been a heavy DC reader)
Admittedly this is also true, as the speed force is also a thing that exists as a fundamental force in the DC-verse
To my knowledge, I do not believe anyone flies between planets without the aid of a some sort of spaceship in Dragon Ball (not counting instant transmission, because that’s not moving). So while there is FTL travel in universe, no one can achieve it without a machine and they wouldn’t be fighting at that speed.