By Michio Kaku, from his book, Hyperspace, Oxford University Press, 1994, page 213
Instead of heating an ice cube, we now cool the superhot matter in the universe through different stages. Beginning with the instant of Creation, we have the following stages in the evolution of our universe.
10-43 seconds The ten dimensional universe breaks down to a four and six-dimensional universe. The six-dimensional universe collapses down to 10-32 centimeter in size. The four- dimensional universe inflates rapidly. The temperature is 1032 degrees K.
10-35 seconds The GUT [Grand Unified Theory] force breaks; the strong force is no longer united with the electroweak interactions. SU(3) breaks off from the GUT symmetry. A small speck in the larger universe becomes inflated by a factor of 1050, eventually becoming our visible universe.
10-9 seconds The temperature is now 1015 degrees K, and the electroweak symmetry breaks into SU(2) and U(1).
10-3 seconds Quarks begin to condense into neutrons and protons. The temperature is roughly 1014 degrees K.
3 minutes The protons and neutrons are now condensing into stable nuclei. The energy of random collisions is no longer powerful enough to break up the nucleus of the emerging nuclei. Space is still opaque to light because ions do not transmit light well.
300,000 years Electrons begin to condense around nuclei. Atoms begin to form. Because light is no longer scattered or absorbed as much, the universe becomes transparent to light. Outer space becomes black.