Loïs Miraux is an engineer and researcher. He has conducted pioneering work on the environmental sustainability of space activities as a freelancer, at CNES, and in the space industry, combining impact quantification and a systemic approach. His research questions the place and role that space could play in a sustainable society. He now works more broadly on energy and resource issues for the transition, notably at the CEA's Institute of Energy Economics, contributing to a transdisciplinary vision of the tensions between space expansion and planetary boundaries.