Assertion: nebula's region | /r/Synonym | the hourglass nebula
Facets:
Source sentences:
text: Messier 8 also contains a region known as the Hourglass Nebula, a bright knot of dust and gas, located in the nebula’s bright central region.
text: When observed with binoculars, the Lagoon Nebula has an oblong shape, with the bright central region, known as the Hourglass Nebula, lying on one side, separated by a dark rift from an open cluster of stars that lie on the other side of M8.