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.

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 …

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

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.

False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth. Image courtesy of NASA. What are Stars? A star is a massive, luminous sphere of plasma held together by gravity. The …

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 die, they …

STARS (Student/Alumni Records System) provides WIU students, alumni and employees with online access to their university records.

The seven main types of stars. How they’re classified and their roles in stellar evolution, lifecycle stages, and how they appear in the night sky.