Assertion: nebula | /r/MadeOf | the star cluster ngc
Facets:
value: with member cluster
type: OTHER
value: with the light from this 800
type: OTHER
Source sentences:
text: The nebula contains the star cluster NGC 6618, with the light from this 800+ member cluster responsible for the nebula’s glow, while the light from a further 1,000+ stars embedded in the outer reaches of M17 is reflected off the nebula.