Tetsuya Komabayashi was awarded a five-year ERC Consolidator Grant (1.9 million euro)which will start in June 2015. The goal of this project is to identify the thermodynamic state of the Earth's central core, which will provide us with critical information about the origin and evolution of the solid Earth. Tetsuya will set up an ultrahigh-pressure diamond anvil cell laboratory to recreate the Earth's core conditions at pressures and temperatures of more than 135 GigaPascals and 5000 Kelvin respectively. By combining the experimental data with thermodynamic calculations, he will try to solve a sixty-year-old question, "what elements are in the core in addition to iron?".