The Sun
By Grant Holland
Core
The temperature is 7 million degrees F. The core contains 40 percent of the sun's mass in 10 percent of the volume. It is the hottest part of the sun.
Information source
fusedweb.gov
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Radiative Zone
The Radiative zone is the section between the innermost core and the outer convective zone. In the radiative zone, energy generated by nuclear fusion in the core moves outward as electromagnetic radiation.
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Convection
It extends from a depth of 200,000 km up to the visible surface of the Sun. Energy is transported by convection. The surface of the convection zone is where light is created.
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Photosphere
Photosphere is the visible surface of the Sun that we are most familiar with. Since the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick very thin.
Source
solarscience.msfc.nasa.gov
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Chromospere
Layer above the photosphere where the temperature rises from 6000°C to about 20,000°C. This layer gives off a reddish color for the sun.
Source
solarscience.msfc.nasa.gov
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Corona
Luminous irregular envelope of extremely hot and highly ionized gas located outside the chromosphere of the sun.
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Sunspots
Sunspots are darker, cooler areas on the surface of the sun in a region called the photosphere.
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Prominence
A stream of incandescent gas projecting above the sun's chromosphere.
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Flare
Solar flare A sudden eruption of magnetic energy released on or near the surface of the sun, usually associated with sunspots and accompanied by bursts of electromagnetic radiation and particles.
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Aurora
Aurora lights are made by the collisions between electrically charged particles from the sun that enter the earth's atmosphere.
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