It is one of the most baffling questions that scientists can ask: how big is the universe that we live in?<br />Horizon follows the cosmologists who are creating the most ambitious map in history, a map of everything in existence. And it is stranger than anyone had imagined, a universe without end that stretches far beyond what the eye can ever see.<br />And, if the latest research proves true, our universe may just be the start of something even bigger. Much bigger.
