Related, i dont know what the technical term for this is, but was thinking about how because of speed, being in two places at once (collision) the equation depe

Related, i dont know what the technical term for this is, but was thinking about how because of speed, being in two places at once (collision) the equation depends greatly on speed. Simplistically, if planes traveled at the speed of light then an object on ANY point of their trajectory would collide. Much more complex than simply amount of space times size of objects. Knowing theres a whole science / engineering behind this, Im just so curious about the people and practices that go into this part of travel especially air and space travel.