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Earth | 2.6
Earth is just one planet amongst many in the Universe, but we think this planet is pretty special! Learn about the fiery early days of our planet and why this one planet among countless others increased the complexity of the Universe in a way that may be unique.
This lesson is part of the members-only content of Middle school Big History. The first 3 lessons of every course are free — this one starts after the free preview.
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