hi, im new and im dumb, so this is probably a really obviously answered question, but: everyone knows the second law of thermodynamics, right? that is, entropy in a closed system can only be increased. if you take the universe as a closed system (a little like the ultimate closed system, i suppose) then the usual example is that entropy is increased by the release of radiation whenever something happens. like, the sun explodes and that increases entropy because the sun, a thing of high order, explodes into lots of radiation, which is a thing with low order. er, did i explain that right? anyway, here's my question: if the universe started out (post big bang)as a dense sea of energy/radiation (are they the same?) and that's usually said to be high order, which then clumps into low order- galaxies and stars and things- which then explode or implode into more radiation and gases- which is lower order... how is the radiation things explode into different from the radiation they're made from?