Assertion: astronomy | /r/UsedFor | refer to astrophysic
Facets:
value: based on strict dictionary definitions
type: CAUSE
Source sentences:
text: Based on strict dictionary definitions, "astronomy" refers to "the study of objects and matter outside the Earth's atmosphere and of their physical and chemical properties" and "astrophysics" refers to the branch of astronomy dealing with "the behavior, physical properties, and dynamic processes of celestial objects and phenomena".