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Asked by to Nat, Nate, Roberto, Sam, Sarah on 18 Jun 2014. This question was also asked by .
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Nate Bastian answered on 18 Jun 2014:
We don’t know for certain, as (for obvious reasons), it’s difficult to see other universes outside ours. However, some theories in physics seem to predict the presence of infinite other universes. So it’s possible that they are out there, although we may never know for certain.
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Natasha Stephen answered on 18 Jun 2014:
There might be but I don’t think we will ever be able to see them! We’re not done yet with exploring our own let alone another one!
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Sarah Casewell answered on 18 Jun 2014:
We just don’t know! We haven’t figured out how to look outside our universe yet though!
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Sam Connolly answered on 18 Jun 2014:
There are actually experiments you can do to test whether there are other universes, but we don’t know for sure yet. If you look at the light left over from the big bang, you can see a bright path in one direction which some people think is another universe pressing against our own. I’m not sure about that, but I think it’s quite likely that there are other universes!
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Roberto Trotta answered on 19 Jun 2014:
This is a tough question! It’s quite possible that there are other universes, but then the question is how: to go and look for them? The point is that in science you have to have a way of telling whether an idea is right or wrong, and if those other Universes can never be explored (not even in principle), then they are not “scientific” — we will never be able to tell for sure whether they are there or not.
At the moment we have been able to eliminate the possibility of some kind of other universes, by making detailed experiments to do with gravity and with the light coming from the Big Bang. But other than that we just don’t know, and we might never know!
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