Do you beleive in parallel Universes?

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I read the article where was said that scientists now believed there may really be a parallel universe.This other universe contain space,time and strange forms of exotic matter. There can be more than one universe and some of them may even contain you,in a slightly different form...What do you think about it? For me it sounds bit unreal but sure gravity before Newton was unknown thing, so never knows. I just imaged myself typing now and other me lets say eating cake which i left for evening :-)Huh i d better go and check...