Astrognosy

(n.) The science or knowledge of the stars, esp. the fixed stars.

Thesaurus Entries

astrogeology, astrognosy, astrography, astrolithology, astrophotography, astrophysics, celestial mechanics, gravitational astronomy, meteoritics, radar astronomy, radio astronomy, solar physics, spectrography, spectroscopy, stargazing, stellar photometry, uranography, uranology, uranometry