Life Cycle of a Star: Stages, Facts, and Diagrams - Science Facts
https://www.sciencefacts.net/life-cycle-of-a-star.html
WEBFeb 2, 2023 · A star is a giant sphere of extremely hot, luminous gas (mostly hydrogen and helium) held together by gravity. A few examples of well-known stars are Pollux, Sirius, Vega, Polaris, and our own Sun. Stars are essentially the building blocks of galaxies and are the source of all the heavier elements.
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