File:NASA's_SDO_Observes_Largest_Sunspot_of_the_Solar_Cycle_(15430820129).jpg · Wikimedia Commons · See Wikimedia Commons
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Sign in to saveAlso known as sun spot, sunspots, sun spots
Sunspots are temporary spots on the Sun's surface that are darker than the surrounding area. They are regions of reduced surface temperature caused by concentrations of magnetic flux that inhibit convection. Sunspots appear within active regions, usually in pairs of opposite magnetic polarity. Their number varies according to the approximately 11-year solar cycle.
Sunspots are temporarily darker areas on the Sun's surface where concentrated magnetic fields prevent normal heat circulation, making those regions cooler than their surroundings. They matter because their numbers follow a predictable roughly 11-year cycle, making them useful for understanding solar activity and its potential effects on Earth.
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Wikidata facts
- Instance of
- physical phenomenon
- Subclass of
- starspot
- Part of
- solar phenomena
- Image
- Sunspots 1302 Sep 2011 by NASA.jpg
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- Commons category
- Sunspots
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