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...
H-R diagram, above the main sequence, stars are brighter than main-sequence stars of the same color. The only way stars ...
Observational astronomy 3.1 Radio astronomy 3.2 Infrared astronomy 3.3 Optical astronomy 3.4 Ultraviolet astronomy 3.5 X...
Galaxies ; Classification of Galaxies ; Determination of Extragalactic Distances ; Distribution of Galaxies ; Rotation o...
These abnormal stars have a higher surface temperature than the other main sequence stars with the same luminosity in th...
Stars ; How Stars Produce Energy ; Multiple Star Systems ; Life Cycles and Ages of Stars ; Important Types of Peculiar S...