Assertion: nebula's light | /r/HasProperty | visible
Facets:
Source sentences:
text: The Dumbbell Nebula was named for its resemblance to a dumbbell when observed in visible light.
text: The Horsehead Nebula is a 'dark nebula', consisting of material so dense that it blocks visible light from background stars or surrounding clouds.
text: The nebula was named after its resemblance to a dumbbell as seen in visible light.
text: Instead, it will simply cool off slowly by radiating light, getting fainter and fainter until it no longer gives off enough light to be visible.