The Sun is the star around which Earth and the other planets in the Solar System revolve. It is located approximately 150 million kilometers from Earth and is the primary source of light and heat for our planet. Astronomically, the Sun is a medium-sized star classified as a yellow dwarf. It is approximately 4.6 billion years old, and scientists estimate that it will exist for approximately the same amount of time. Thermonuclear reactions are constantly occurring within the Sun: hydrogen nuclei f

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