A galaxy is a physical 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), meaning 'milky', a …

May 5, 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 …

Discover the latest in electronic & smart appliance technology with Samsung. Find the next big thing from smartphones & tablets to laptops & tvs & more.

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.

If you are new to Galaxy start here or consult our help resources. You can install your own Galaxy by following the tutorial and choose from thousands of tools from the Tool Shed.

6 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 of billions of …

The product line includes the Galaxy S series of high-end smartphones, the Galaxy Z series of foldable smartphones, the Galaxy A, M, and F series of mid-range and budget smartphones, the Galaxy Tab …

May 18, 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 …

Mar 18, 2026 · 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.

Feb 5, 2026 · Discover what a galaxy is explained in simple terms, how many galaxies exist, and how the universe size shapes our view of the cosmos—packed with clear, engaging science.