Chemistry is the fundamental thread linking the diffuse interstellar medium to the complex architectures of planetary systems.

Deciphering the transition from simple atomic gas to the prebiotic complexity observed in star-forming regions and protoplanetary disks requires a multiscale perspective, integrating extragalactic environments, nearby molecular clouds, and microscopic chemical processes occurring on grain surfaces.

Recent breakthroughs enabled by facilities such as ALMA and JWST, together with rapid advances in laboratory astrochemistry, molecular spectroscopy, and physical–chemical modeling, have transformed our understanding of the chemical Universe. At the same time, these developments have highlighted the growing need for closer collaboration between observers, experimentalists, spectroscopists, and theorists.

This workshop will bring together researchers working across these complementary disciplines to discuss recent advances in astrochemistry from molecular clouds to planetary systems and potentially habitable worlds. Through invited reviews, contributed talks, poster presentations, and dedicated discussion sessions, the meeting aims to foster interdisciplinary collaborations and identify key scientific challenges for the next generation of astronomical facilities and laboratory studies.