..universe will crash back..one day potential energy will be equal to kinetic, and then kiss goodbye...I like it by the way...leaving nice feeling that all a**holes on this world will end up anyway..
I believe the universe will recycle itself some how, though, I dont believe in the 'big crunch' theory, the universe is expanding faster, and as we know it, it will probably just fizzle out....
As light travels over a long period of time, it could slow down, and over zillions (Dont quote me on that one) of years, parts of the the universe would become massless, now, light has no mass, but contained mass, so effectively, the slowing of light could change the properties of its mass/contained mass ratio and somehow be effected by the massless universe... Say,having actual mass... Now imagine all the light (with mass) banging into each other, I dare say it could spit out a bit of energy.
Next thing, new universe!
Well, thats what I think, but on the subject, anyones guess is as good as anyones,well, until someone tries to create a mini universe in a lab somewhere (which wouldnt suprise me) :)
Dabz