Martian Thunderbird

Something left its mark on Mars’ surface.

"Martian Thunderbird" is NASA's great name for this feature on Mars. Taken by the Mars Reconnaissance Orbiter, this image shows the result of "a low-angle impact from an asteroid or comet." Image: NASA/JPL-Caltech/Univ. of Arizona (NASA/JPL-Caltech/Univ. of Arizona)

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