Any individual who has an excessive fetish for outer space or astronomic topics as to (almost) turn it into a sexual tendency
While zoophiles spend their leisure time in barns or pet stores, astrosexuals spend most of their timelocked inside local observatories allegedly "searching the skies for new discoveries"
adjective
1. (of a person) sexually attracted to people of Austrian decent, regardless of gender
noun
1. an austrosexual person
Although she identifies as a lesbian, the sexual appeal of all things Austrian (accent included) overrides her usual sexual appetite for women making Dee a proud Austrosexual.