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Wonders of the Solar System

Original Series

Episode 5: Aliens

Duration: 59 minutes

on BBC Four HD

Professor Brian Cox explores how the search for aliens in the solar system has followed the search for water. He looks at Jupiter's moon Europa - a dazzling ball of ice. Show more

BBC Four HD

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.