'New images show where an ancient river may have raged on Mars
A raging river might have cut across Mars billions of years ago. The Perseverance rover has captured new images that appear to reveal geologic evidence of a fast-flowing river that fed into Jezero Crater, the site of an ancient Martian lake. Perseverance began exploring the remnants of the environment within the crater, which now resembles a dry lake bed, after landing on the red planet in February 2021.
Scientists aren’t sure whether the rows of rocks that appear to ripple across the landscape are like the shifting riverbanks of the Mississippi or the island-like sandbars of the Platte River in Nebraska. The rocky layers were likely much taller in the past but have been eroded by wind over time. “The wind has acted like a scalpel that has cut the tops off these deposits,” said Michael Lamb, river specialist and Perseverance science team collaborator at Caltech, in a statement.
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