Outline of galaxies
= Outline of galaxies
{wiki=Outline_of_galaxies}
The outline of galaxies generally refers to the structure, classification, and characteristics of galaxies in the universe. Here’s a basic outline that encompasses the essential features of galaxies: \#\#\# 1. **Definition of a Galaxy** - A galaxy is a massive system that consists of stars, star clusters, planetary systems, gas, dust, and dark matter, all bound together by gravity. \#\#\# 2.