Subject: Could the 'Big Bang' have happened more than once?

There has been a lot of discussion about 'dark matter/energy' to try and 
explain why the universe appears to be expanding and accelerating.  Could not 
this phenomenon be explained by another ‘universe’ (or universes), say with the 
start points some thirty to sixty billion light years apart?  The acceleration 
could then be explained by the attraction of the other universe cluster(s), 
which presumably, would also be expanding in all directions.  

Seems to me that if a Big Bang could happen once, why not multiple times?  
Perhaps even in an endless series of explosions, throughout the entire infinity 
that existed before it all started. 

Thanks,
Richard

Re: Could the 'Big Bang' have happened more than once?