: Astronomie: starspot

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starspot

Starspots are stellar phenomena, so-named by analogy with sunspots. Spots as small as sunspots have not been detected on other stars, as they would cause undetectably small fluctuations in brightness. The commonly observed starspots are in general much larger than those on the Sun: up to about 30% of the stellar surface may be covered, corresponding to starspots 100 times larger than those on the Sun. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Starspot)

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