Nearby examples of (dwarf) irregular galaxies include the Magellanic Clouds . [ edit ] Dwarfs Main article: Dwarf galaxy...
Spirals Main articles: Spiral galaxy and Barred spiral galaxy The Sombrero Galaxy , an example of an unbarred spiral gal...
All elliptical galaxies probed so far have super massive black holes in their center, and the mass of these black holes ...
Galaxies ; Classification of Galaxies ; Determination of Extragalactic Distances ; Distribution of Galaxies ; Rotation o...
X-rays and gamma rays. NEXT Inside This Article 1. Introduction to How Galaxies Work 2. Galaxy...
Doppler shifts, astronomers have noticed that velocities at the center of Seyfert galaxies are about 30 times greater th...
Quasars 'turn on' and off depending on their surroundings, and since quasars cannot continue to feed at high rates for 1...
