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You are here: Home / Space / Are Sunspots Permanent and Why Do Sunspots Appear To Travel Horizontally Across the Surface of the Sun?

Are Sunspots Permanent and Why Do Sunspots Appear To Travel Horizontally Across the Surface of the Sun?

June 12, 2020 by Karen Hill

Sometimes you see sunspots and sometimes you don’t.

Individual sunspots come and go within days or weeks, the newer ones appearing closer to the equator.

Sunspot activity, however, has an average cycle of 11 years.

Some scientists claim that 11 years is only one-half of a full 22-year cycle. The cycle begins with the appearance of sunspots between 35° and 40° of latitude from the solar equator.

The height of the cycle occurs about 4 years later when a great number of sunspots appear around the 15° latitude lines.

By the time sunspots begin to show up within about 5° of the equator, about 7 years later, the cycle is at an end, and a beginning, as new sunspots reappear between 35° and 40° of latitude.

Sunspots appear to travel horizontally across the surface of the Sun, but this is simply evidence of the Sun’s rotation.

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Filed Under: Space

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

Previous Post: « How Often Do Sunspots Occur and During Which Century Was There a Drop In Sunspot Activity?
Next Post: Are Faculae and Sunspots Related and How Are Faculae Used To Predict When Sunspots Will Appear? »

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