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.
Publication milestones show what entered the public record. They do not establish the origin of unidentified observations.
NASA’s 2025 announcement concerns a rock sampled by Perseverance. Biological and non-biological explanations still need to be distinguished.
The original analysis of viewing geometry and the object’s apparent motion.
Start with the scholarly textual context. A divine name in an ancient tradition and a modern extraterrestrial explanation are different kinds of claim.
Life beyond Earth is a research question spanning chemistry, geology, biology and planetary environments.
NASA’s UAP study focuses on how to collect observations that scientists can actually test.
An attributed route into the original public collection. Individual records and their claims need separate evaluation.
The history of the universe provides context while life-detection claims require their own evidence.
Cassini data revealed phosphorus in material from Saturn’s ocean moon. What the measurement supports, and what it leaves open.
The mission launched on 14 October 2024. Its scientific goal is to investigate conditions that could support life.
Detecting a planet is the start of investigating its properties and environment.