What is a galaxy?

Learn all about different types of galaxies in the universe and how they came together.

Galaxy, Definition, Formation, Types, Properties, & Facts

What is a galaxy? - Astronomy - Space science - Study Guides

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What is a galaxy? All you need to know about galaxies

Spiral Galaxy Facts & Definition

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What is a galaxy?

Galaxies HubbleSite

How many galaxies are in the Universe?

What Is a Galaxy? NASA Space Place – NASA Science for Kids

What Is a Galaxy? NASA Space Place – NASA Science for Kids

What is a galaxy? - BBC Sky at Night Magazine

What is a galaxy? (Vote now!) - Universe Today