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  1. 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 …

  2. Galaxy | Definition, Formation, Types, Properties, & Facts | Britannica

    Jan 25, 2026 · 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 …

  3. Galaxies - NASA Science

    Feb 6, 2026 · 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 …

  4. Galaxy - The University of Texas at Dallas

    Galaxy is a centralized hub that connects applicants, students, faculty and staff to essential university systems. It provides access to Polaris and Orion for academic and application tasks, Gemini for …

  5. Explore the Latest Galaxy Smartphones | Samsung US

    Discover our newest Galaxy smartphones and explore Samsung's full lineup—including the Galaxy S25 Series, Flip and Fold phones, Fan Edition, A Series 5G, and more.

  6. Galaxies: Collisions, Types and How They're Made | Space

    Jan 4, 2019 · Galaxies are composed of stars, dust and dark matter, all held together by gravity. Astronomers aren't certain exactly how galaxies formed. After the Big Bang, space was made up …

  7. Galaxy Types - NASA Science

    Dec 8, 2025 · Our Milky Way is one example of a broad class of galaxies defined by the presence of spiral arms. These galaxies resemble giant rotating pinwheels with a pancake-like disk of stars and a …

  8. Galaxy - Elliptical, Spiral, Irregular | Britannica

    Jan 25, 2026 · Learn about the three general types of galaxies: spiral, elliptical, and irregular. Almost all current systems of galaxy classification are outgrowths of the initial scheme proposed by the …

  9. What Is a Galaxy? | NASA Space Place – NASA Science for Kids

    Jan 20, 2026 · 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 …

  10. Samsung Galaxy Z TriFold | Samsung US

    With Samsung DeX enabled, Galaxy Z TriFold is a premium Galaxy smartphone that delivers seamless, multi-workspace multitasking. You can create up to four workspaces and use Samsung DeX on the …