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nuclear fusion
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photosphere
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Vocab 2/22

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nuclear fusion the process by which nuclei of small atoms combine to form a new more massive nucleus; the process releases energy
photosphere the visible surface of the sun
chromosphere the thin layer of the sun that is just above the photosphere and that glows a reddish color during eclipses
corona the outmost layer of the sun's atmosphere
sunspot a dark area of the photosphere of the sun that is cooler than the surrounding areas and that has a strong magnetic field
solar flare an explosive release of energy that comes from the sun and that associated with magnetic disturbances on the sun's surface
coronal mass ejection coronal gas that is thrown into space from the sun
aurora colored light produced by charged particles from the solar wind and from the magnetosphere that react with and excite the oxygen and nitrogen of Earth's upper atmosphere; usually seen in the sky near Earth's magnetic poles
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