Wonders Of The Solar System
Season 1 Episode 05 "Aliens" Brian Cox explores how the search for aliens has followed the search for water. Brian considers how the building blocks of life might be found on other planets by studying the required element that is most abundant on Earth - water. He descends to the bottom of the Pacific to discover the creatures that have evolved in this most alien of environments, and flies above the American Scablands to see the effect of the geological changes wrought by water in exactly the circumstances astronomers believe occurred on Mars. | FINAL EPISODE
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