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The Sun is the most important of all heavenly bodies of our solar system. Without the Sun there would be no light, no heat, no energy of any kind.
The Sun is a mass of flaming matter. The surface temperature of the Sun is about 10,000°F, in the interior of the Sun the temperatures are much higher, rising to 30,000,000°F. Much of the radiation from the Sun is absorbed by the atmosphere before it reaches the Earth’s surface.
Our Solar System
The Radiation
The Atmosphere
The Sun