The role of HRMOS to the comprehension of planetary systems across time and space

Recent advances in exoplanet research increasingly seek to identify the fundamental factors that shape planetary systems. An emerging novel approach aims at placing planets within the broader context of the Milky Way—considering stellar populations, galactic dynamics, and the influence of their birth environments. The more homogeneous studies are conducted on host-star populations, the clearer it becomes that the characteristics of planetary systems are intrinsically linked to the environment conditions under which they form. Within this framework, the HRMOS instrument is poised to make a significant contribution to understanding the galactic planetary population. By targeting stellar clusters with well-constrained ages and chemical compositions, HRMOS will enable systematic exploration of the parameter space of planetary systems. This approach will allow detailed studies of planetary properties across a range of stellar masses, clarifying how host characteristics influence planet formation. Equally important, HRMOS will provide the means to compare systems in clusters of different ages, adding a temporal dimension to planetary evolution. This will make it possible to trace how planetary architectures arise and evolve, ultimately determining the fate of planetary systems. In this talk, I will outline the pivotal role HRMOS can play in advancing our understanding of the Galactic planetary population and the broader processes that shape planetary systems across the Milky Way