Seems I saw this thread somewhere else but in case I didn't or got it confused with another. IMO, any theory is as good as the next partly because we will probably never really know what lies beyond the observable boundries of the Universe we currently know.<br /><br />Your theory is similar to mine in that I tend to think we are one Universe within an endless void and that other Universes lie beyond. They are too far for current optical physics to detect due to redshift limits. That is, our Universe is a collection of the galaxies, one of which is the one we reside in. Another collection of galaxies may lie 960 billion light years away, too far to detect. Another might be banging into existence 30 trillion light years away and another might be ceasing to exist 394 quadrillion light years out.<br /><br />But as I'm not a scientist, I don't have evidence to back this up so its complete theory based on speculation, conjecture.<br /><br />Current science accepts the big bang theory which states the Universe began as a singularity banging into existence. My question would be...and this question is by no means mine by origin. What came before, or surrounded the singularity and mathematics being theoretically infinite, that is...a number can be followed by an infinite amount of zeros. It stands to reason that whatever surrounds our Universe could extend into infinity by definition of something as simple as being able to ask...what exists 23 quintillion light years away?<br /><br />Mainstream science has some mathematical, even some observational evidence to support BB but as with science on the cutting edge, dealing with theoreticals. This model will give way if and when better mathematical models show otherwise. And that can only come if and when something beyond the BB evidence is observed or calculated out. <div class="Discussion_UserSignature"> <p><strong>My borrowed quote for the time being:</strong></p><p><em>There are three kinds of people in life. Those who make it happen, those who watch it happen...and those who do not know what happened.</em></p> </div>