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 …

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 …

Dec 4, 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.

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

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 …

4 days ago · Normal stars simply couldn't create such massive black holes quickly enough. Now, using NASA’s James Webb Space Telescope (JWST), an international team of astronomers …