Assertion: astronomy | /r/HasProperty | natural science
Facets:
Source sentences:
text: Astronomy (from Greek: ἀστρονομία) is a natural science that studies celestial objects and phenomena.
text: Astronomy is a natural science that deals with the study of celestial objects, such as stars, planets, comets, nebulae, star clusters and galaxies.
text: Astronomy is a natural science.
text: While Astronomy is a natural science that deals with the study of stars, planets, comets, galaxies, ect.