7 year old huh, Alex I envy you. They are pure magic at that age, mine is all grown up and no fun any more. Still she might settle down and have a few of her own; that'd be good cause then I could enjoy them and just give them back at night
Background radiation is another quantum leap in faith. They predicted a 3deg Kelvin temp, based on the then proposed size/mass of the universe; they got lucky. However sinse then, those estimates have had to be drastically revised upward. The measured 3deg Kelvin remains the same, so where does that leave the theoretical predictions?
cheers,
Doug