11/09/2026
From 1st to 3rd September, the "4th Workshop on Life Cycle Assessment of Space Transportation Systems" took place at the Institute of Space Systems at the University of Stuttgart. Experts from various European countries with expertise in the fields of LCA, emission assessment, impact modeling and experimental work came together to discuss about the current status, knowledge gaps, and possible improvements in assessing and evaluating the environmental impact of space transportation systems.
The aim of the workshop series is to summarize and expand knowledge on the environmental impact assessment, and to enhance a cross-disciplinary network of experts working together. In addition to presentations on the current state of research, the participants discussed topics in three working groups. One working group, "LCA/Ecodesign", addressed the implementation of ecological aspects in the design phase of STS, as well as improvements to LCA methodology and data handling. A second group discussed "Emission Assessment", focusing on how to build launch and re-entry emission inventories as detailed as possible. The third working group, which was new to this workshop series, focused on "Atmospheric Modeling", addressing the emissions' evolution, atmospheric interactions, and their representation in global atmospheric models.
Apart from identifying knowledge gaps, the discussions aimed to establish synergies and collaborations, and to improve communication between the various fields working towards more sustainable spaceflight.
The results will be published in the form of a white paper. We would like to thank the @ for their funding (50RL2580) and everyone for their participation and valuable contributions to the discussions.