Hydrogen (H), carbon (C), oxygen (O) and sulphur (S) are essential elements for life on Earth. More knowledge about the path these elements follow, from the formation of a dust or gas disc around a star to the formation of planets, is necessary to predict on which exoplanets life could evolve. The researchers will combine models of chemical reactions in dust and gas discs with experiments in which the formation of small planets will be simulated so that the quantity and spread of H, C, O and S in exoplanets can be predicted. ( Credits)