Horizon discovers that the hunt for oceans in space is starting a new era in the search for alien life. We used to think that oceans were unique to our planet, but we were wrong. Show more
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Horizon discovers that the hunt for oceans in space is starting a new era in the search for alien life. We used to think that oceans were unique to our planet, but we were wrong. Show more
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.
