Galaxy

From Wikipedia, a free encyclopedia written in simple English for easy reading.

A galaxy is a group of millions of stars, gas, dust, and dark matter. Galaxies are held together by gravity. Everything in a galaxy moves around a center.

Our Galaxy is called the Milky Way.

There are three main types of galaxies: ellipticals, spirals, and irregulars.

[edit] Things bigger than galaxies

Galaxies are grouped together in groups of galaxies.

Groups of galaxies are grouped together in galactic superclusters.

All the galactic superclusters are inside The Universe

This short article needs someone to make it better.
You can help Wikipedia by adding to it.