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- Galaxy - Wikipedia
A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity [1][2] The word is derived from the Greek galaxias (γαλαξίας), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System
- Galaxy | Definition, Formation, Types, Properties, Facts | Britannica
What is a galaxy? A galaxy is any of the systems of stars and interstellar matter that make up the universe Many such assemblages are so enormous that they contain hundreds of billions of stars Galaxies usually exist in clusters, some of which measure hundreds of millions of light-years across
- What Is a Galaxy? | NASA Space Place – NASA Science for Kids
What Is a Galaxy? The Short Answer: A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity We live on a planet called Earth that is part of our solar system But where is our solar system? It’s a small part of the Milky Way Galaxy
- Galaxies - NASA Science
Galaxies consist of stars, planets, and vast clouds of gas and dust, all bound together by gravity The largest contain trillions of stars and can be more than a million light-years across The smallest can contain a few thousand stars and span just a few hundred light-years
- What’s a galaxy? All you need to know - EarthSky
Galaxies are the building blocks of our universe Their distribution isn’t random, as one might suppose Instead, galaxies reside along unimaginably long filaments across the universe,
- What Is a Galaxy? - Scientific American
Very generally speaking, galaxies are tens of thousands to hundreds of thousands of light-years across and have millions to several trillions of stars Our Milky Way, for example, is about
- What is a Galaxy? - sciencenewstoday. org
The Basics: What Is a Galaxy, Really? At its core, a galaxy is a massive, gravitationally bound system consisting of stars, stellar remnants, interstellar gas, dust, and dark matter
- What Are Galaxies? (With Understandable Details) - Owlcation
What Is a Galaxy? A Brief Insight A galaxy is an astronomical unit composed of a cluster of stars, planets, and, in most or possibly all cases, a supermassive black hole Indeed, other material also makes up the galaxy, including anything clustered about and gravitationally bound to a supermassive black hole This includes gas clouds and even dark matter Usually, there is a great void between
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