astrobiologist
astrobiology
astroblast
astrobotany
astrocentre
astrochemistry
astroclereid
astrodome
astrogeologist
astrogeology
astroid
astrolabe
astrologer
astrologic
astrological
astrologically
astrology
astrometeorology
astrometer
astrometric
astrometry
astronaut
astronautic
astronautical
astronautic(al)
astronautically
astronautics
astronavigation = astronomical navigation
astronomer
astronomic