Coba jelasin Lihat pula dari Planet tanpa inti dong

The Role of Carbon in Extrasolar Planetary Geodynamics and Habitability, Cayman T. Unterborn, Jason E. Kabbes, Jeffrey S. Pigott, Daniel R. Reaman, Wendy R. Panero, (Submitted on 31 October 2013 (v1), last revised 9 November 2013 (this version, v3))