NASA s Curiosity rover has uncovered an intriguing flower formation on the surface of Mars that looks akin to an ocean coral. The microscopic view of Martian sand was taken with the Mars Hand Lens Imager (MAHLI), a tool for imaging minerals, textures and structures in rocks and soil at scales smaller than the diameter of a human hair. The Curiosity team confirmed it was a diagenetic crystal cluster , that experts from NASA JPL suggest may have been formed by minerals precipitating from water. While the formation looks large in size, it is actually smaller than a penny, and consists of three-dimensional crystal clusters made from a combination of minerals. NASA scientists say it can tell them more about the structure of Martian