By the Book 10

And on we go…ever further back into time! We find ourselves starting at the beginning of the lepton era at a universal age of 100 microseconds and moving backwards. At this point things get shaky! Up until now all the stuff we’ve talked about in the by the book segments has been part of the standard model of the early universe. But now is when we get to the strange speculations that not everyone agrees on.

So get this: at this point in the universe’s history the temperature was 1 trillion Kelvin, and the density is 10^14 grans per cubic centimeter. That’s equivalent to 100 million tons per thimbleful! That nuts! The next era is the hadron era. But I would like to take a step aside from the book and take a moment to discuss some to the physic background we need in order to understand the hadron era to its fullest.