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  1. Star - Wikipedia

    Many other stars are visible to the naked eye at night; their immense distances from Earth make them appear as fixed points of light. The most prominent stars have been categorised into …

  2. Stars - NASA Science

    May 2, 2025 · Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements. Every star has its own life cycle, ranging from a few million to …

  3. Star | Definition, Light, Names, & Facts | Britannica

    Oct 27, 2025 · This article describes the properties and evolution of individual stars. Included in the discussion are the sizes, energetics, temperatures, masses, and chemical compositions of …

  4. Stars - WorldAtlas

    Sep 21, 2024 · Stars are massive, luminous spheres of gas, mainly composed of hydrogen, with smaller amounts of helium and other elements. The lifespan of a star varies widely, generally …

  5. What are stars? - BBC Sky at Night Magazine

    Jun 3, 2025 · Stars are a fundamental component in the Universe and collectively form star clusters, galaxies and galaxy clusters. Find out more about star names, star clusters to see …

  6. Stars—facts and information | National Geographic

    Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores.

  7. What Is a Star and How Does It Work? - ThoughtCo

    May 8, 2025 · Stars are huge balls of hot, glowing gas that make light and heat through fusion. Stars come in different sizes and colors, and each one has a life cycle like our Sun. As stars …

  8. Stars | Astronomy.com

    Stars are spherical balls of hot, ionized gas (plasma) held together by their own gravity. Stars are the most fundamental building blocks of our universe.

  9. These Massive Stars 10,000x Heavier Than the Sun Ruled Early ...

    4 days ago · On the left, an artist’s impression of a globular cluster near its birth, hosting extremely massive stars with powerful stellar winds that enrich the cluster with elements …

  10. Types - NASA Science

    Oct 22, 2024 · The universe’s stars range in brightness, size, color, and behavior. Some types change into others very quickly, while others stay relatively unchanged over trillions of years.