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We develop a classification scheme for the evolutionary state of planetsbased on the non-equilibrium thermodynamics of their coupled systems, includingthe presence of a biosphere and the possibility of what we call anagency-dominated biosphere (i.e. an energy-intensive technological species).The premise is that Earths entry into the Anthropocene represents what might befrom an astrobiological perspective a predictable planetary transition. Weexplore this problem from the perspective of the solar system and exoplanetstudies. Our classification discriminates planets by the forms of free energygeneration driven from stellar forcing. We then explore how timescales forglobal evolutionary processes on Earth might be synchronized with ecologicaltransformations driven by increases in energy harvesting and its consequences(which might have reached a turning point with global urbanization). Finally,we describe quantitatively the classification scheme based on the maintenanceof chemical disequilibrium in the past and current Earth systems and on otherworlds in the solar system. In this perspective, the beginning of theAnthropocene can be seen as the onset of the hybridization of the planet - atransitional stage from one class of planetary systems interaction to another.For Earth, this stage occurs as the effects of human civilization yield notjust new evolutionary pressures, but new selected directions for novelplanetary ecosystem functions and their capacity to generate disequilibrium andenhance planetary dissipation.

Earth as a Hybrid Planet - The Anthropocene in an Evolutionary Astrobiological Context