The research group MOSAIC of the Department of Chemistry at the University of Antwerp focusses on using computational methods to describe and understand properties of chemical systems and their reactivity in three domains: astrochemistry and nanomaterials, structural chemistry, and the physical chemistry of the liquid phase. To this end, both classical and quantum chemical computational techniques are used. In each case, the aim is to obtain fundamental insights into the active processes on the one hand and to contribute to socially relevant issues on the other.