MCTOP – Cosmological Hypothesis (English version)

This document presents a cosmological hypothesis called MCTOP (Medium Cosmic Thermodiffusive, Organic and Proliferant). Rather than introducing new hypothetical entities, this approach proposes a reactive cosmic substrate that interacts weakly with light and heat, in a cumulative way over large distances and timescales. The objective is to provide a pathway to unify dark matter and dark energy as two regimes of the same phenomenon. The text describes the fundamental interactions, a minimal mathematical framework, and suggests possible avenues for observational tests (protostars, quasars, cosmic microwave background, CubeSat-type space experiments).