Transcript: The entropy of the universe is a measure of its disorder or chaos. If the laws of thermodynamics apply to the universe as a whole as they do to individual objects or systems within the universe, then the fate of the universe must be to increase in entropy. This is obvious in the case where the universe re-collapses in a big crunch because there all structures are erased in the heat death, but in the big chill it’s is not as obvious. However, entropy of the universe continues to increase in the expansion when it continues forever. Black holes contain a hundred million times more entropy than a normal star of the same mass, so as matter goes into stellar remnants in black holes there’s a huge increase in entropy. As normal matter decays into a sea of radiation, the unstructured radiation also has a large amount of entropy. For example, the microwave background contains much of the entropy of the universe currently. In an open universe the eventual increase in entropy over its life time is a factor of ten to the power twenty-three.