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Star | Definition, Light, Names, Facts | Britannica 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
Types - NASA Science The universe’s stars range in brightness, size, color, and behavior Some types change into others very quickly, while others stay relatively unchanged over trillions of years
Stars—facts and information | National Geographic Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores
Star Facts - Interesting Facts about Stars Stars are luminous spheres made of plasma – a superheated gas threaded with a magnetic field They are made mostly of hydrogen, which stars fuse in their cores That process releases energy, which pushes against the weight of the outer layers of the star and keeps it stable
What Is a Star and How Does It Work? - ThoughtCo 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 spread elements in space that help make new stars, planets, and life
What Is a Star? | Types of Stars - Sky Telescope Where do stars come from? According to current star formation theory, stars are born as clumps within gigantic gas clouds that collapse in on themselves The cloud’s material heats up as it falls inward under the force of its own gravity
What Are Stars? - NASA Learn about stars from NASA's High Energy Astrophysics Science Archive Center
What is a star? - Cool Cosmos 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 When this happens, a tremendous amount of energy is created causing the star to heat up and shine Stars come in a variety of sizes and colors