Overview
- The peer‑reviewed Nature study led by Joel Hurowitz details mineral textures in a sample dubbed Sapphire Canyon taken in July 2024 from Bright Angel, a unit within Jezero’s ancient lake sediments.
- Perseverance identified vivianite and greigite, minerals that on Earth often occur with organic matter and can be associated with microbial processes.
- Researchers caution that nonbiological chemical reactions could produce the same features, which rover instruments cannot rule out.
- NASA officials described the finding as promising and possibly the clearest sign yet of past life on Mars, while stressing that it remains provisional.
- Definitive tests require returning the Sapphire Canyon sample to Earth, and mission plans for retrieving Perseverance’s cores are still to be decided.