A biosignature is any characteristic, element, molecule, substance or feature that serves as evidence for past or present life. It must be something that cannot be produced without life. Some examples ...

On September 10, 2025, the latest research findings revealed that NASA's Perseverance rover discovered features with potential biological significance in a rock sample collected on July 21, 2023, from ...

A sample collected by NASA’s Perseverance Mars rover from a dry riverbed in Jezero Crater could preserve evidence of ancient microbial life.