* Astronomy

Horizon: How Big is the Universe is broadcast on Monday 27 August at 2100 BST on BBC Two in the UK

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.
And, if the latest research proves true, our Universe may just be the start of something even bigger. Much bigger.

The observable Universe and beyond

The further we look into space, the further back in time we go and the last thing we see is left-overs from the Big Bang. This pattern in the sky could give us clues to the Universe next door.
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