• Skip to primary navigation
  • Skip to main content
  • Skip to footer
Zippy Facts Logo

Zippy Facts

Interesting Random Facts

  • Animals
  • Culture
  • Firsts
  • Food
  • Geography
  • Health
  • History
  • Inventions
  • Language
  • Mythology
  • Odds
  • People
  • Religion
  • Science
  • Space
  • Universe
  • World
You are here: Home / Space / What Is a Galaxy, What Are Galaxies Made Of, and Do Galaxies Have Black Holes At the Center?

What Is a Galaxy, What Are Galaxies Made Of, and Do Galaxies Have Black Holes At the Center?

August 1, 2020 by Karen Hill

A galaxy is a loose formation of between 1 million and 1 trillion stars, dust, and gases.

These stars, dust, and gases are drawn together in clusters by their forces of gravity, much in the same way as our solar system is held together by the gravity of the Sun and the planets.

It is believed that dark matter accounts for around 90% of the mass of most galaxies.

Recent data also suggests that super massive black holes may exist at the center of many large galaxies.

Related Facts

  • Who Discovered Black Holes and Where do Black Holes come from?
  • Who Discovered other Galaxies in the Universe and that the Sun is part of the Milky Way Galaxy?
  • Why Is a Black Hole Black, Where Do Black Holes Come From, and When Were Black Holes First Discovered?
  • How do astronomers know how far away stars and galaxies are from earth?
  • How do astronomers know where one galaxy ends and another galaxy begins?
  • Why Does Gravity Try To Attract All Things To the Center of Earth?

Filed Under: Space

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

Previous Post: « How Many Galaxies Are There In the Universe and What Does the Word Galaxy Mean In Greek?
Next Post: How Much Matter Exists In the Universe and How Is the Mass of the Universe Determined By Observation? »

Footer

Follow

  • Facebook
  • Flickr
  • GitHub
  • Google+
  • Instagram
  • LinkedIn
  • Medium
  • Pinterest
  • StumbleUpon
  • Tumblr
  • Twitter
  • YouTube

Categories

Accomplishments Animals Culture Firsts Food Geography Health History Inventions Language Mythology Odds People Religion Science Space Universe World Your Body

About

Zippy Facts empowers the world by serving educational content that is accessible to everyone.

A tribute to growing up, zippyfacts.com showcases interesting and unusual facts about the world.

Our mission is to use technology to facilitate knowledge transfer and sharing.

Copyright © 2020 Zippy Facts

  • About Us
  • Contact
  • Privacy Policy