Oct 27, 2025 · A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. Of the tens of billions of trillions of stars in the observable universe, …

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 …

A star is a luminous spheroid of plasma held together by self-gravity. [1] The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances from Earth …

May 3, 2025 · What Is a Star? A star is a luminous sphere of plasma held together by gravity. It generates energy through nuclear fusion in its core — a process in which lighter atomic nuclei …

May 8, 2025 · Stars are huge balls of hot, glowing gas that make light and heat through fusion. As stars die, they spread elements in space that help make new stars, planets, and life. The stars have …

Nov 16, 2025 · The simplest way to describe a star is that it is a great ball of fire, but it is more complicated than that. A star is a giant ball of hydrogen turning into helium through nuclear fusion.

A star is a huge sphere of very hot, glowing gas. Stars produce their own light and energy by a process called nuclear fusion. Fusion happens when lighter elements are forced to become heavier elements. …

Oct 22, 2025 · Stars are massive celestial bodies made up of hot gases that emit light and heat through nuclear reactions happening in their cores. They are the building blocks of galaxies and play a crucial …

Apr 11, 2025 · Stars are spherical celestial bodies consisting of helium and hydrogen. They are the sky’s self-luminous shining orbs that dazzle and are superheated by radiating energy through a nuclear …

A star is a huge glowing ball of hot gas, mainly hydrogen and helium. The temperature is so high in its core that nuclear fusion occurs, producing energy. The outward pressure of gas heated by fusion is …