9th House in Synastry

This is the area of life devoted to higher learning, religions and belief systems, as well as foreign dealings and overseas travel; in synastry, the impact of one person's planets on another's 9th House indicates the impact they have on the other's worldview and the degree to which they either expand the other's world of experience or constrict it. Moreover, it can reveal broad insights into one's own relationships with their teachers.