If Mars was vaporized by aliens, how would it affect us? Assume that the core of Mars exploded, sending the debris flying in all directions, and that some would pass close by, but not hit, Earth. How would it affect Earth's orbit? Would it cause another planet to diverge from its orbit which would then affect ours?
Mars isn't blown up, it's vaporized, and all of the particles are sent flying outward in a sphere, so the chunks of Mars are irrelevant. it's just the absence of it's gravity you need to take into account.