Nice.
But I also have a few questions in mind for quite some time about these topics :)
How could they know that it covers a diameter of 150 billion light years? Since there are newer and newer discoveries of things we couldn't see or imagine before - maybe our comprehensnion of our surroundings can grasp as much information, while there is much beyond.
Or maybe not :D We cannot be certain about it.

Also, the way they explain it sounds a whole lot like an explosion that could be, in reality, a tiny hydrogen explosion, but we are inside it, and for us it is enourmous and all there is, when it's simply 1 of infinite tiny hydrogen explosions :D
Since they thought the atom is the smallest particle there could be for hundreds of years - even the name suggests it, then we can only hope to find those discoveries in our lifetime..
How do you think?