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Curiosity Views a Martian Rock Shaped Like Coral

Curiosity viewed this rock shaped like a piece of coral on July 24, 2025. The rover has found many rocks that were formed by minerals deposited by ancient water flows.
PIA26633
Credits: NASA/JPL-Caltech/MSSS
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Description

click here for Figure A for PIA26633
Figure A

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NASA's Curiosity Mars rover used its Mars Hand Lens Imager (MAHLI), a camera on the end of its robotic arm, to view this wind-eroded rock shaped like a piece of coral on July 24, 2025, the 4,608th Martian day, or sol, of the mission. Nicknamed "Paposo" by the rover's science team, the rock was about 2 inches (5 centimeters) from the MAHLI camera when this was taken.

Figure A is another MAHLI image taken about 10 inches (25 centimeters) away from Paposo.

Curiosity has found many small features like this one, which formed billions of years ago when liquid water still existed on Mars. Water carried dissolved minerals into rock cracks and later dried, leaving the hardened minerals behind. Eons of sandblasting by the wind wore away the surrounding rock, producing unique shapes.

This common process is seen extensively on Earth and has produced fantastic shapes on Mars, as well, including a flower-shaped rock.

Curiosity was built by NASA's Jet Propulsion Laboratory, which is managed by Caltech in Pasadena. JPL leads the mission on behalf of NASA's Science Mission Directorate in Washington as part of NASA's Mars Exploration Program portfolio.

For more about Curiosity, visit:

science.nasa.gov/mission/msl-curiosity