Thermodynamic Cosmic Problem !! Ill start with the third law of thermodynamics which denies the existence of zero kelvin (as stated by my lecturer). Also i found out that the temperature of vacuum is 3k due to the radiations left over from the Big Bang. However the space(or the absolute vacuum) which exists beyond the expanding universe must be at zero Kelvin as it has no access to the radiations which would be expanding at the speed of light. Doesn't this fact violate the 3rd law of thermodynamics ? Thanks in advance !