Keyword Analysis & Research: galaxy
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Galaxy - Wikipedia
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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What Is a Galaxy? | NASA Space Place – NASA Science for Kids
https://spaceplace.nasa.gov/galaxy/en/
WebApr 11, 2024 · 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 …
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Galaxy | Definition, Formation, Types, Properties, & Facts
https://www.britannica.com/science/galaxy
Web3 days ago · 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.
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Galaxies - NASA Science
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 …
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Galaxies—facts and information - National Geographic
https://www.nationalgeographic.com/science/article/galaxies
WebApril 17, 2019. • 6 min read. 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...
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Galaxies Images - NASA Science
https://science.nasa.gov/gallery/universe-galaxies/
WebSep 14, 2023 · NASA’s James Webb Space Telescope has peered into the chaos of the Cartwheel Galaxy, revealing new details about star formation... This landscape of “mountains” and “valleys” speckled with glittering stars is actually the edge of a nearby, young, star-forming region...
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Galaxies | HubbleSite
https://hubblesite.org/science/galaxies
WebJan 31, 2024 · Galaxies are vast cosmic islands of stars, gas, dust, and dark matter held together by gravity. Hubble’s keen eye has revealed intricate details of the shapes, structures, and histories of galaxies — whether alone, as part of small groups, or within immense clusters.
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What is a galaxy? All you need to know about galaxies - EarthSky
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 universe. Their...
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Types of Galaxies | NASA Space Place – NASA Science for Kids
https://spaceplace.nasa.gov/galactic-explorer/en/
WebJan 19, 2022 · A galaxy is a huge collection of gas, dust, and billions of stars all held together by gravity. All galaxies are made up of these same things. However, they come in many different shapes and sizes. Here are a few types of galaxies: Spiral galaxies look like giant pinwheels. The arms of the pinwheel are made up of stars and lots of gas and dust.
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Size, composition, and structure of galaxies | Britannica
https://www.britannica.com/summary/galaxy
Webgalaxy, Any of the billions of systems of star s and interstellar matter that make up the universe. Galaxies vary considerably in size, composition, structure, and activity, but nearly all are arranged in groups, or clusters, containing from a few galaxies to as many as 10,000.
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