Perseverance Found Mars' Strongest Sign of Ancient Life Yet

A Mars rock named Cheyava Falls carries the strongest potential biosignature Perseverance has found

Its 'leopard spots' contain greigite and vivianite — minerals microbes make on Earth

NASA published the finding in Nature on 10 September 2025 after a year of peer review

Scientists found no strong non-biological explanation, but cannot confirm life without the sample

Proof needs the Sapphire Canyon sample home — and that return mission is now in budget limbo

Read the full story on GeneralNews Read full article →