![Triffid Nebula M20](https://www.constantscholar.com/wp-content/uploads/2016/02/Trifid_M2-7_19_14R-753x500.jpg)
Triffid Nebula M20
This nebula was discovered by Charles Messier in 1764. It is a combination of an open cluster and emission nebula. The name means “divided into three lobes”. In the center […]
This nebula was discovered by Charles Messier in 1764. It is a combination of an open cluster and emission nebula. The name means “divided into three lobes”. In the center […]
Whirlpool Galaxy Also known as M51a and NGC5194. The smaller galaxy in the lower right is a companion galaxy known as NGC5195 or M51b. First discovered by Charles Messier in […]