Click here for cartoon explanation of the origin of the universe by Sara Zimmerman.
I've seen children's eyes light up when I tell them about black holes and the Big Bang. ~ Brian Greene
The radiation left over from the Big Bang is the same as that in your microwave oven but very much less powerful. It would heat your pizza only to minus 271.3*C - not much good for defrosting the pizza, let alone cooking it. ~ Stephen Hawking