Yup...asked and for the most part have been ignored. Although there was some attempt. Something about the electromagnetic thingy that keeps all the stars, and suns, and moons, and comets, and meteors, and asteroids, aloft by the universal accelerator, sometimes wears out, or gets turned off or something causing them to stop being accelerated and then the earth comes to meet them. The problem with that is the impact speed. The math doesn't come out right.