photosphere
The Columbia Encyclopedia, Sixth Edition
... bright patches, or granules, are several hundred miles in diameter and are constantly shifting. Another feature of the photosphere, observed only near the sun's edge, is the appearance near sunspots of bright, veinlike regions known as faculae.
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sun
The Columbia Encyclopedia, Sixth Edition
... revealed a number of interesting phenomena occurring during the periods of solar activity associated with sunspots , e.g., faculae, plages (flocculi), prominences, and flares. Importance to Terrestrial Life Without the heat and light of the sun, life as ...
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