Keyword Analysis & Research: galaxies definition

britannica.com

https://www.britannica.com/science/galaxy

WEB2 days ago · galaxy, 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. Nature has provided an immensely varied array of galaxies, ranging from faint, diffuse dwarf objects to brilliant spiral-shaped giants.

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wikipedia.org

https://en.wikipedia.org/wiki/Galaxy

WEBA galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. The word is derived from the Greek galaxias (γαλαξίας), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System.

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nasa.gov

https://spaceplace.nasa.gov/galaxy/en/

WEBApr 11, 2024 · A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle. When you look up at stars in the night sky, you’re seeing other stars in the Milky Way.

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merriam-webster.com

https://www.merriam-webster.com/dictionary/galaxy

WEB1. a. often capitalized : milky way galaxy used with the. b. : any of the very large groups of stars and associated matter that are found throughout the universe. 2. a. : an …

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earthsky.org

https://earthsky.org/astronomy-essentials/definition-what-is-a-galaxy/

WEBMar 21, 2024 · A galaxy is a vast island of gas, dust and stars in an ocean of space. Typically, galaxies are millions of light-years apart. Galaxies are the building blocks of our...

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khanacademy.org

https://www.khanacademy.org/partner-content/amnh/the-universe/galaxies/a/what-is-a-galaxy

WEBGoogle Classroom. Galaxies are titanic swarms of tens of millions to trillions of stars, orbiting around their common center of gravity. They also contain interstellar gas and dust. Galaxies show a range of shapes that astronomers group into three basic classes: spiral, elliptical, and irregular.

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nationalgeographic.com

https://www.nationalgeographic.com/science/article/galaxies

WEBApr 17, 2019 · Galaxies are sprawling systems of dust, gas, dark matter, and anywhere from a million to a trillion stars that are held together by gravity. Nearly all large galaxies are thought to also... definition

definition

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nasa.gov

https://science.nasa.gov/universe/galaxies/

WEBGalaxies 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. Most large galaxies have supermassive black holes at […] definition

definition

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hubblesite.org

https://hubblesite.org/science/galaxies

WEBJan 31, 2024 · Galaxies are concentrations of stars, gas, dust, and dark matter. They come in a variety of shapes and sizes. Some are fated to collide, like the Milky Way and Andromeda. Credit: NASA and J. Olmsted (STScI) Types of Galaxies. What Kinds of Galaxies Are There?

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astronomy.com

https://www.astronomy.com/science/galaxies/

WEBGalaxies are vast collections of stars, gas, dust, and dark matter bound together by gravity. There are hundreds of billions of galaxies in the universe. Deep-Sky Objects, Galaxies, Observing. definition

definition

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