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This Mars rock may look like a femur thigh bone, but its shape is likely sculpted by erosion, either wind or water.
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08.21.2014

Bone up on Mars Rock Shapes

No bones about it! Seen by Mars rover Curiosity using its MastCam, this Mars rock may look like a femur thigh bone. Mission science team members think its shape is likely sculpted by erosion, either wind or water.

If life ever existed on Mars, scientists expect that it would be small simple life forms called microbes. Mars likely never had enough oxygen in its atmosphere and elsewhere to support more complex organisms. Thus, large fossils are not likely.

Image Credit: NASA/JPL-Caltech/MSSS

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