- Observatory boffin - Observer of celestial bodies - One who studies celestial bodies - Scientist studying celestial bodies - Scientist who studies the stars and planets - Stargazer - An astrologer.
- Star science - Study of celestial objects - Astrology. - The science which treats of the celestial bodies, of
their magnitudes, motions, distances, periods of revolution, eclipses,
constitution, physical condition, and of the causes of their various
phenomena. - A treatise on, or text-book of, the science.