This article describes the properties and evolution of individual stars As they live and die, they form nearly all of the elements on the periodic table, like oxygen and carbon Included in the discussion are the sizes, energetics, temperatures, masses, and chemical compositions of stars.
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Historically, stars have been important to civilizations throughout the world
They have been part of religious practices, divination rituals, mythology, used for celestial navigation and orientation, to mark the passage of seasons, and to define calendars.
Stars are a fundamental component in the universe and collectively form star clusters, galaxies and galaxy clusters Find out more about star names, star clusters to see with the naked eye, how to photograph stars and the science of stardust. Stars are spherical balls of hot, ionized gas (plasma) held together by their own gravity Stars are the most fundamental building blocks of our universe.
Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. And what happens when they die These star facts explain the science of the night sky. Stars are massive, luminous spheres of gas, mainly composed of hydrogen, with smaller amounts of helium and other elements
The lifespan of a star varies widely, generally ranging from several million to several trillion years.
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. Without stars, our planet and everything on it would not exist
Stars are factories for elements
