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Where has all Mars’s water gone? The answer might be well buried

Computer artwork looking over the rivers of the Kasei Valley as the Sun sets on Mars 3.5 billion years ago

Much of the water that filled Mars’s lakes and rivers (artist’s illustration) billions of years is now hidden in the planet’s rocks. Credit: Kees Veenenbos/Science Photo Library

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Nature 591, 504 (2021)




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