I was thinking, if time passage varies with speed would the speed of atoms random movement (temperature) affect time? For example, if the universe is expanding, as some predict, it will eventually reach a state where everything will reach very near to absolute zero, or maybe absolute zero. If it did reach absolute zero what would happen to time? would it equal infinity? Then, i thought well about 10^-43 seconds after the big bang, when planck temperature (1.416785(71)×10^32 K), supposedly occured. Would time be not stopped? Or going in negative time?