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 trillions of years, and …

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 constellations …

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 stars.

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

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 ranging from …

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 with the naked …

Nov 20, 2025 · 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.

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.

Sep 16, 2020 · These and planetary nebulae from low-mass stars are the sources of many of the elements we find on Earth. Their dust and gas will one day become a part of other stars, starting the …

Mar 31, 2025 · This landscape of “mountains” and “valleys” speckled with glittering stars is actually the edge of a nearby, young, star-forming region... Astronomers using NASA’s Hubble Space Telescope …