Thursday May 24, 9:45pm - 10:00pmon BBC Four

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.

Category
Documentary / Science
Original air date
2012-08-27