A non-earthcentric approach to life detection.

Area of Science:

• Astrobiology
• Planetary Science
• Origin of Life Studies

Background:

• Current life detection strategies often rely on Earth-centric definitions of life.
• A universal, non-Earthcentric approach is needed to avoid missing potential extraterrestrial life.
• Understanding biosignatures and end-member states is critical for robust life detection.

Purpose of the Study:

• To outline a comprehensive strategy for non-Earthcentric life detection.
• To define universal, measurable terms for life.
• To establish the necessary understanding of biosignatures and end-member states for detecting life elsewhere.

Main Methods:

• Defining life in universal, measurable terms.
• Investigating the nature of biosignatures from measured life parameters.
• Characterizing end-member states (life, past life, no life) across scales.
• Conducting laboratory and field studies on Earth to refine detection methods.

Main Results:

• A framework for a non-Earthcentric life detection strategy has been developed.
• Key questions regarding required limits of detection, spatial, spectral, and temporal resolutions are being addressed.
• The strategy aims to ensure life is not missed when encountered.

Conclusions:

• A robust, non-Earthcentric life detection strategy is essential for exploring life in our solar system and beyond.
• Laboratory and field research on Earth are critical for validating and refining extraterrestrial life detection methods.
• Defining universal parameters for life and its biosignatures will enhance the probability of successful detection.