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Horizon

How Big is the Universe?

One of the most baffling questions that scientists can ask: how big is the universe that we live in? `Horizon' follows the cosmologists who are creating the most ambitious map in history - a map of everything in existence. It's stranger than anyone had imagined - a universe without end that stretches far beyond what the eye can ever see. If the research proves true, our universe may just be the start of something much bigger.

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