SIZE, COMPOSITION, AND STRUCTURE OF GALAXIES | BRITANNICA
galaxy, 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 … From bing.com
WHAT IS A GALAXY? | NASA SPACE PLACE – NASA SCIENCE FOR KIDS
Aug 11, 2025 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 … From bing.com
THE MILKY WAY: OUR HOME GALAXY EXPLAINED (STRUCTURE, STARS
Jul 28, 2025 You would be looking into the heart of the Milky Way—our home galaxy, the grand island of stars in which our Sun and Earth reside. For millennia, humans have looked up at this … From bing.com
Mar 19, 2025 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 … From bing.com
May 21, 2024 A galaxy is a cluster of stars, nebulae, dark matter, and other astronomical objects. Most galaxies are tens of thousands of light years in diameter, and contain billions of … From bing.com
Mar 23, 2025 A galaxy can contain hundreds of billions of stars and be many thousands of light-years across. Our own galaxy, the Milky Way, is around 100,000 light-years in diameter. From bing.com
May 9, 2025 In modern times, though, we use “galaxy” more generically to refer to any large system of stars, gas, dust and dark matter, all held together by their mutual gravity. From bing.com
May 2, 2025 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 … From bing.com
4 days ago 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 … From bing.com
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 … From bing.com
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