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The first episode begins with an illustration of the giant impact hypothesis: approximately 4.4 billion years ago when the Earth was formed, it is conjectured that a planet-like object referred to as Theia collided into the early Earth, dynamically reshaping the Earth and forming the moon. The episode then jumps ahead to the Cambrian Explosion, showing the first diversification of life in the sea.
First Air Date : Nov 05, 2005
Last Air date : Nov 05, 2005
Episode : 3 Episode
Season : 1 Season
Runtime: 30:14 minutes
Studio: BBC Three
Country: United Kingdom, United States of America
Cast: Kenneth Branagh
