Assertion: nebula's ring | /r/HasProperty | the edge of a spherical bubble
Facets:
Source sentences:
text: Each “ring” is actually the edge of a spherical bubble seen projected onto the sky —
text: Each "ring" is actually the edge of a spherical bubble seen projected onto the sky —
text: Each 'ring' is actually the edge of a spherical bubble seen projected onto the sky - that's why it appears bright along its outer edge.
text: Each 'ring' is actually the edge of a spherical bubble seen projected onto the sky - that's why it appears bright along its outer edge.