I have always been fascinated to believe that there could
be other universes beyond our own. Do you believe in other universes
and parallel Universes?
I want to focus on two parts or your question, belief and observation.
Science is the process of making observations and interpreting the meaning
of those observations. If an idea is well supported by reliable evidence, a
scientist might say s/he 'believes' it at the time, but that would change if
new, different evidence emerges. Your question is particularly challenging
because an 'alternate universe' is almost by definition unobservable. I
would suggest that science is silent on the subject because we can neither
prove nor disprove the existence of other universes -- although individuals
may form opinions on the subject based on non-scientific reasons.
Hope this helps,
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Update: June 2012