A biosignature is a clue, not a verdict
A useful life-detection claim specifies the measurement, its biological interpretation and the non-biological alternatives.
Explore research, public records and open questions.
A useful life-detection claim specifies the measurement, its biological interpretation and the non-biological alternatives.
NASA’s 2025 announcement concerns a rock sampled by Perseverance. Biological and non-biological explanations still need to be distinguished.