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Everything in the universe has a beginning, but how can the universe as a whole have a beginning? Does the cosmos come with a start date? Does a universal commencement make sense? What would it possibly mean? And what if there are multiple universes? Does the entire multiverse have a beginning?

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Alexander Vilenkin is a theoretical physicist and the Leonard and Jane Bernstein Professor and Director of the Institute of Cosmology at Tufts University. His work in cosmic strings has been pivotal.

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Closer To Truth, hosted by Robert Lawrence Kuhn and directed by Peter Getzels, presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.