Yellow crystals of elemental sulfur were revealed after NASA’s Curiosity rover happened to drive over a rock and crack it open on May 30, 2024, according to the Curiosity team. Yellow crystals of elemental sulfur on Mars. Image credit: NASA. While people associate sulfur with the odor from rotten eggs, elemental sulfur is odorless. It forms in only a narrow range of conditions that scientists haven’t associated with the history of this location. And...
