Perseverance rover detects complex organic carbon on Mars

NASA's Perseverance rover has discovered complex organic carbon compounds within Martian rocks at a site already considered a prime candidate for evidence of ancient life. The findings, detailed in a study published on June 24, 2026, represent the most robust detection of organic material yet reported from the rover's exploration of Jezero Crater.

The research team, led by Ashley Murphy of the Planetary Science Institute, used the rover's SHERLOC instrument to analyze two mudstone samples in the Bright Angel rock formation. This area is part of Neretva Vallis, an ancient river channel that once flowed into Jezero Crater, a site believed to have hosted a lake billions of years ago. The instrument mapped hundreds of carbon-rich signatures across the rocks.

Scientists describe the detected material as macromolecular carbon, a complex, large form of carbon-based molecules. On Earth, such compounds are often found in extremely old rocks and can, in some cases, be the only organic evidence of past microbial life. Researchers caution that the discovery does not prove life existed on Mars, as these compounds can also form through non-biological processes, such as meteoritic delivery or...