Deltas on Mars that formed when a river flowed into a crater that contained a lake. Jezero crater, landing site for the Perseverance rover (left), delta with terraces (middle) and the “pancake delta” in Gale crater, landing site of the Curiosity rover (right).

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Modified from Figure 1, Wilson et al., 2021. CTX image credit: NASA/JPL/MSSS

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