Dec 20, 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 …

The amount of material in a star (its mass) is so huge that a nuclear reaction called nuclear fusion goes on inside it. This reaction changes hydrogen to helium and gives off heat.

The meaning of STAR is a natural luminous body visible in the sky especially at night. How to use star in a sentence.

Oct 22, 2025 · Yellow Dwarf Stars: Our sun is a yellow dwarf star, with a temperature of about 5,500 degrees Celsius. These stars are medium-sized and are in the middle of the …

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 …

A star is a giant ball of hot gas that can be compared to a huge engine – hydrogen is its primary fuel. Atoms in the core of stars join together in a physical reaction known as nuclear fusion, …

Where Do Stars Come From? Every star forms in a huge cloud of gas and dust. Over time, gravity causes the cloud to contract, drawing the gas closer and closer together. As more gas …

Definition of star noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Explore the mesmerizing world of stars, their life cycle from nebulae to black holes, different types like red giants and white dwarfs.

A star is a brilliantly glowing sphere of hot gas whose energy is produced by an internal nuclear fusion process. Stars are contained in galaxies. A galaxy contains not only stars, but clouds of …