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Horizon

2012-2013

Episode 4: How Big Is the Universe?

Duration: 59 minutes

on BBC Four

Available for years

Series exploring scientific issues. This episode follows the cosmologists who are creating the most ambitious map in history - a map of everything in existence. Show more

BBC Four

About BBC Four

BBC Four reflects arts, music and culture with an ambitious range of intellectually and culturally enriching programmes, taking an expert and in-depth approach to its subjects.