Thats it
.
The universe expands because space has to make room for all the new radiation of stars if it does not it approaches the possibility of everything happening at once
which is impossible one would think even for the universe
..so it has to accomodate all this movie film waving thru space
. Is it dark energy or is it really light energy causing expansion
. If you have 2 ton of movie film it wont fit in a 1 ton box so you get a bigger box
...and the new box needs to be able to grow to fit the load
... dam it thats too close to the ballon idea... but yes I like it
Could there be any other explaination of the accelerating expansion..or rather does any one have a view of the current thinking from the folk at the cutting edge.
alex