Spiral Galaxy Facts & Definition
Galaxies
Barred spiral galaxy - Wikipedia
Infographic of the Most Astounding Facts About The Milky Way
Comparison of Milky Way and compact galaxy
The Milky Way Galaxy
10 Interesting Facts About the Milky Way - Universe Today
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The Milky Way has a mass of 1.5 trillion suns. Most of it is mysterious dark matter. - Vox
What is a galaxy?
Irregular Galaxy Facts, Types & Examples - Video & Lesson Transcript
Andromeda Galaxy: Facts about our closest galactic neighbor
The New History of the Milky Way
The Milky Way Let's Talk Science