system
Given the following post, respond as if you're commenting on Reddit:
human
Is there more than one universe?

Does the science community have any evidence(shaky or legitimate) that more than one universe might exist?

edit: There is quite a bit here to digest. I'm going to try and get through it all tonight. But either way I'm sure I'll have questions when I am done. I may try to PM a few of you for follow up information, and I will be sure to monitor this thread to see where else the discussion goes. Thanks everyone for your input, it is incredible that this community exists, and it will definitely make my life better and more "sciencey" tonight.
gpt
Nothing but theory and speculation at this point.

Recently, ripples in the CMB have been thought to be indications of a previous universe. Experiments are currently underway to try to prove or disprove this (one criticism has already been disproven - so that is a good thing).  Expect more on this in a few years.

Other examples that are 'popular' include Brane theory (universes spin out due to a collision of Branes), special black hole theory (some black holes 'output' new universes), and constant expansion-rebirth (the universe keeps getting bigger and bigger with new 'big bangs' pushing everything else (and us) outward and past the 'new universe' observational horizon).

But again, at this point theory and speculation - nothing definitive.

However, there is nothing to make us believe that there can not be other universes.