Assertion: void | /r/RelatedTo | images of barnard
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Boötes void has been often associated with images of Barnard 68, a dark nebula that does not allow light to pass through; however, the images of Barnard 68 are much darker than those observed of Boötes void, as the nebula is much closer and there are fewer stars in front of it, as well as being a physical mass that blocks light passing through.