Comment on Earth's Early Atmosphere Similiar to Saturn's Moon

Earth's Early Atmosphere Similiar to Saturn's Moon

Two-and-a-half billion years ago, the Earth's atmosphere was rich in hydrocarbons, similar to Saturn's moon, Titan. Before Earth's atmosphere ditched methane and began accumulating oxygen, though, our planet appears to have cycled back and forth every few million years between the two states years a hydrocarbon haze and clear skies.

 

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