- Curiosity rover discovered extensive honeycomb-like polygonal fractures in Valle Grande, much larger than any seen before.
- The polygons were captured in a 360-degree panorama, spreading across the landscape and wrapping around a butte.
- These formations may have originated from mud cracks or other processes like temperature cycles or compression.
- The discovery adds to evidence that ancient Mars had water, chemistry, and nutrients to support microbial life.
- Organic molecules considered precursors to RNA and DNA were found, indicating Mars had the right chemistry for life.