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Are multiverses real? An astrophysicist explains why it depends on how you define 'real'

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. Are multiverses real? If so, what do they look ...
PBS

Is There a Simple Proof For a Vast Multiverse?

Is there evidence for the existence of an enormous number of other universes? In 1987, Steven Weinberg wrote a cute little paper entitled “Anthropic Bound on the Cosmological Constant”. Weinberg was ...