Let me start by saying I know nothing and just come seeking knowledge. I hear that a graviton has never been discovered, only theorized. True? If so, I was thinking of how we might find one. When planets get nailed by asteroids isn't the energy from the momentum of the asteroid getting added or subtracted to to the planets gravity? Might there be Gravitons being created here? Antigravitons? Wouldn't it be cool if we could launch some spinning, molten spheres from the space station and nail them with BBs to see what happens?