Image: Curiosity rover sees Martian sulfur up close

This close-up view shows fragments of sulfur crystals, the first ever seen on the Red Planet.
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NASA’s Curiosity finds a Mars rock shaped like coral in a close-up image

NASA’s Curiosity rover has returned a close-up image of a small rock on Mars that has caught attention for its coral-like appearance. The formation was photographed during routine surface work and ...