Astronomy
Part of speech: noun
Definition: The study of the physical universe beyond the Earth's atmosphere, including the process of mapping locations and properties of the matter and radiation in the universe.
Example sentence: I didn't understand how you could be an actor if you didn't also study philosophy and study political science, astronomy. And also just go out and live life and have experiences.
Uranology
Part of speech: noun
Definition: the study of the heavens and heavenly bodies, also books about the subject.