NASA’s Curiosity Mars rover used its Mars Hand Lens Imager (MAHLI) camera on the end of its robotic arm to view a coral-shaped piece of rock, nicknamed ‘Paposo’, on July 24, 2025 — the 4608th Martian day, or sol, of the mission.

Curiosity has found many small features like this one, formed billions of years ago when liquid water 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.

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