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 …

Oct 20, 2025 · Star, any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. This article describes the properties and evolution of …

Mar 19, 2025 · At its simplest, a star is a massive ball of hot, glowing gas, held together by gravity. But stars are so much more than that. A star is a thermonuclear engine. Deep in its …

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 …

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 …

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 …

Within each system, the star sits at the centre, providing heat and light that shapes and characterises the planets and other bodies in orbit around it. That light may even be the basis …

5 days ago · 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 …

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 …

Apr 11, 2025 · Stars are massive, hot and roughly spherical. They’re held together by their own gravity, and they consist of plasma (gas heated so much that electrons are stripped from its …