The latest discovery from NASA's Curiosity Mars rover is a field of honeycomb-shaped polygons covering a Martian valley called Valle Grande. As Gizmodo reports, Curiosity has snapped pictures of the unusual terrain texture before, called polygonal fractures, each about 1.
Source: [The Verge](https://www.theverge.com/science/973314/nasa-curiosity-rover-mars-polygons)