Assertion: gravitational lens | /r/HasProperty | a cluster of galaxies
Facets:
value: between an observer
type: LOCATION
value: between a distant light source
type: LOCATION
Source sentences:
text: A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and an observer, that is capable of bending the light from the source as the light travels towards the observer.