spider1

If there is no future contraction then wouldn't everything remained tiny particles just floating away from the initial big bang. The contraction seems to be the only model that gives a clear explanation of gravity. You cant roll dough on water.

light is constrained to our universe. That is part of the reason dark matter appears 'dark'. Gravity is the spine of time. Currently there are membranes(parallel universes) ahead and behind us on this gravity spine. Between membranes there is matter waiting. We only exchange with the matter that is currently there. Almost as if the membrane activates the matter as is passes through hyperspace. It is hard to imagine all the dimensions at one time. There is a certain level of supersymmetry involved in this procces. As if matter is somehow following the same path the universe ahead of ours is. Dark matter may be cooling down in a sense just waithing for the next membrane to pass by and charge up. So if it is ahead and behind us it would be somewhat detectable also seeming to surround everything.