the second law of thermodynamics states that the entropy of the universe must always do what
Second law of thermodynamics The second law of thermodynamics states that the total entropy can never decrease over time for an isolated system, that is, in a system which neither energy nor matter can enter nor leave. The total entropy can remain constant in ideal cases where the system is in a steady state (equilibrium), or is undergoing a reversible process. In all other real cases, the total entropy always increases and the process is irreversible. The increase in entropy accounts for the irreversibility of natural processes, and the asymmetry between future and past.
Absolute hot Contemporary models of physical cosmology postulate that the highest possible temperature is the Planck temperature, which has the value 7032141678500000000♠1.416785(71)×1032 kelvins, or 142 nonillion kelvins (142 quintillion on the long scale).[3] Above about 1032K, particle energies become so large that gravitational forces between them would become as strong as other fundamental forces according to current theories. There is no existing scientific theory for the behavior of matter at these energies. A quantum theory of gravity would be required.[4] The models of the origin of the universe based on the Big Bang theory assume that the universe passed through this temperature about 10−42 seconds after the Big Bang as a result of enormous entropy expansion.[3]