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The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.
Sun, structure of the Sun, Solar System, Milky Way, hydrogen, helium, fusion, solar flare, sunspot, photosphere, chromosphere, corona, solar wind, granulation, solar prominence, space probe, astronomy, atomic physics, particle physics, geography, physics
The apparent movement of the Sun is caused by the Earth's rotation around its axis.
This animation demonstrates how solar energy can be utilized.