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Extremely common red dwarf L
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this post was submitted on 01 Jun 2026
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Purple earth hypothesis suggests that early photosynthesis wasn't chlorophil based, but on a simpler molecule (retinal) which is purple colored. The Canfield ocean was supposed to have followed this time yielding a turquoise life, where the ocean was anoxic and sulfidic. That was then replaced during the great oxigenation event which lead to the current green earth.