A Hail Mary for Amino Acids: Stellar-Environment Adaptive Panspermia and Silicon-Based Prebiotic Chemistry in High-Radiation Systems

This paper proposes Stellar-Environment Adaptive Panspermia (SEAP), a speculative conceptual framework that extends standard panspermia models by repositioning protoplanetary disk transit as an active selective and transformative environment for prebiotic chemistry. Under SEAP, the molecular inventory delivered to a planetary surface reflects the specific astrophysical properties of the target system — stellar wind intensity, radiation flux, thermal gradients, and disk chemical composition — rather than being a neutral sample of interstellar chemistry. As a case study, the framework is applied to Epsilon Eridani, exploring whether its extreme radiation environment could favor silicon-based prebiotic chemistry over carbon-water pathways. The 2025 detection of interstellar comet 3I/ATLAS, which exhibited prebiotic chemistry distinct from solar system comets, is discussed as indirect observational support. A central implication of SEAP is that molecular adaptability may be a pre-planetary property, demonstrated during transit itself. This is an explicitly speculative framework, not an empirical model, intended to generate conceptual discussion and testable hypotheses for future investigation.