The nebula has the designation NGC 6618 in the New General Catalogue. It is also known as the Swan Nebula, Horseshoe Nebula, Lobster Nebula, or Checkmark Nebula.
Read More »Omega Nebula – Messier 17
The nebula’s name means “divided into three lobes,” and refers to the object consisting of three types of nebulae and an open star cluster. The open cluster is surrounded by an emission nebula, a reflection nebula, and a dark nebula within the emission nebula that gives M20 the trifurcated appearance for which it is known.
The dark nebula was catalogued by Edward Barnard and has the designation Barnard 85 (B85). The Trifid Nebula has the designation NGC 6514 in the New General Catalogue.
Read More »Trifid Nebula – Messier 20
The Lagoon Nebula, or Messier 8 (M8), is a large interstellar cloud classified as an emission nebula and an H II region. The nebula is located in Sagittarius constellation, within the Milky Way Galaxy. It lies in the direction of the galaxy’s centre. The nebula’s designation in the New General Catalogue is NGC 6523.
Read More »Lagoon Nebula – Messier 8