SPIRAL GALAXY
SPIRAL GALAXY Spiral Galaxies are looking like a round cycle. Spiral galaxies get their name from the shape of their discs. In this type of GALAXIES basically have a place named "galactic bulge" it is the central bright region of the galaxy, which Brightness is very high. In Spiral galaxies, near Spiral arm, a region presents, named HALO. Spiral - galaxy originally described by Edwin Hubble . Most Spiral galaxies consist of a flat, rotating disc containing Stars, dust and Nebulae and it's center is known as Bulge . Sub Categories Of Spiral Galaxy:- Spiral Galaxies are divided into sub categories:- A . S0 Galaxies : It is basically the mixture of Spiral and Elliptical galaxy. It works like a bridge between the two galaxies classification. B. Sa Galaxies : It is a thin and tight arm of normal spiral galaxies. NGC - 1302 an