The Orange Dream Project Series: Conceptual, Experimental, and Astrobiological Models

The Orange Dream Project explores an Earth-like planetary model in which biochemistry operates beyond the traditional carbon–oxygen paradigm. Instead, it focuses on phosphorus, arsenic, and silicon as complementary elements capable of forming stable polymers, redox cycles, and structural frameworks for potential life. The project examines planetary chemistry, theoretical biochemistry, and observable biosignatures across three interrelated studies. — Paper I: Conceptual Planetary Model Proposes an Earth-like world with moderate temperature and pressure, a semi-oxidizing atmosphere (mainly N₂–CO₂), and oceans enriched in silicate, phosphate, and arsenate compounds. The model demonstrates how phosphorus–arsenic–silicon chemistry could support stable polymeric systems and biochemical energy transfer. — Paper II: Experimental and Theoretical Biochemistry Simulated Earth-like conditions (298 K, 1 bar) and UV illumination promote formation of P–Si–O linkages. Theoretical and laboratory analogs suggest that phosphorus–arsenic redox cycles can yield ~40 kJ·mol⁻¹ per reaction, providing a plausible mechanism for non-oxygenic metabolism. — Paper III: Astrobiological Implications and Observational Signatures Integrates conceptual and experimental findings into an astrobiological framework. Predicted gases (PH₃, AsH₃, dimethyl-silane) and surface reflectance features (580–620 nm range) provide identifiable spectral markers for telescopic missions such as JWST, LUVOIR, and ELT. Together, these three papers constitute the *Orange Dream Project Series*, expanding our understanding of alternative planetary biochemistry and the potential diversity of life beyond Earth. © 2025 Dr. M. Hamed Torkamaan. All rights reserved. For correspondence: mh.torkamaan@gmail.com