Do Universes Expand Because There's Nothing to Stop Them?

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Universes may expand because there is no force to prevent their expansion, but this concept primarily applies to our observable universe. While our universe is expanding due to insufficient gravitational forces and the influence of dark energy, it is uncertain whether other potential universes would behave similarly. The existence of multiple universes remains unproven, and any assumptions about their expansion must consider that they could operate under different laws of physics. Current observations suggest that the expansion of our universe is accelerating and may be irreversible. Understanding the nature of expansion requires acknowledging the limits of our knowledge beyond the observable universe.
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would it be fair to say that Universes(??) on all scales, which consist of 'something', expand for the very simple reason that there is, quite literally, 'nothing' to prevent them from doing so?

(question based on random musings..)
 
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sherlock ohms said:
would it be fair to say that Universes(??) on all scales, which consist of 'something', expand for the very simple reason that there is, quite literally, 'nothing' to prevent them from doing so?

(question based on random musings..)

.The existence of multiple universes is not a proven fact. The only universe we can speak about based on observation is this one. This one appears to be expanding. However, there is no reason why we should assume that all other universes, if they do exist. must follow the same pattern. Especially if those universes function under laws completely contrary to ours.

Of course this universe expands because gravity has proven as yet insufficient to halt or reverse the expansion. So in that sense you are right. It expands because no insufficient counterforce to the expansion has been applied. However it also expands because of the newly-discovered dark energy which accelerates its expansion making the stoppage and reversal of the expansion seemingly impossible based on our current observation of the detectable universe. Which of course has to be applied only to the detectable since beyond that we don't really know what's going on.


Parallel Universes Videos


Dark Energy/Dark Matter Videos
http://www.youtube.com/watch?v=pHXv-NuSnP0&feature=related
 
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