
The design of HRMOS is driven by the achievement of three extremely innovative and revolutionary scientific cases, which may be complemented by other cases, proposed by the astronomical community: The scenarios are obviously not limited to these, as HRMOS will be able to address numerous scientific topics, ranging from the study of clusters , the origin of the heaviest elements up to the chemistry of interstellar medium. HRMOS will be a unique partner for the new generation of space missions, such as HAYDN and PLATO. It will also complement the new medium-resolution spectroscopic surveys from the ground.