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Maybe Venus Was Never Habitable
The planetary science community argues back and forth about when Venus was last habitable. Did it lose its oceans billions of years ago, or more recently? A new paper suggests that Venus has been a hellscape for its entire history. No oceans, ever. This result comes from the ratio of atmospheric chemicals and how quickly they're replenished by volcanic outgassing. On Earth, volcanic eruptions are mostly steam from interior water, but on Venus, they're 6% water at most.
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