NASA's Curiosity rover captures photo of tiny mineral flower on Mars

NASA shared a close-up picture of a tiny, flower-like mineral deposit on the surface of Mars captured by Curiosity rover. "It's a concretion, eroded from sedimentary rock that was cemented by mineral-rich groundwater," the rover's Twitter handle informed. The centimetre wide branching rock resembles a sponge or coral but is lifeless. It was likely formed when water still covered Mars.