Sunspot - Wikipedia
Solar cycles last typically about eleven years, varying from just under 10 to just over 12 years. Over the solar cycle, sunspot populations increase quickly and then decrease more slowly. …
Sunspots: What are they, and why do they occur? | Space
Apr 13, 2023 · Sunspot positions also change throughout the solar cycle. During the solar maximum, many sunspots are found along mid-latitudes (approximately 30 degrees north and …
Sunspots - NASA Science
Mar 10, 2025 · Like freckles on the face of the Sun, sunspots appear to be small features, but size is relative: The dark core of this sunspot is actually larger than Earth. What Are Sunspots? …
Sunspots and Solar Flares - NASA Space Place
4 days ago · They appear dark because they are cooler than other parts of the Sun’s surface. The temperature of a sunspot is still very hot though—around 6,500 degrees Fahrenheit! Why are …
Sunspots - Solar and Heliospheric Observatory
2 days ago · NOTICE: There is an image outage of the Sunspot images due to a cooling water line burst in the Joint Science Operations Center (JSOC) at Stanford University on 2024-11 …
Sunspots/Solar Cycle - NOAA / NWS Space Weather Prediction …
Sunspots appear in a wide variety of shapes and forms. The darkest area of a sunspot (also the first to be observed) is called the umbrae. As the sunspot matures (becomes more intense), a …
Sunspot | Solar Flares, Magnetic Fields & Sunspots | Britannica
sunspot, vortex of gas on the surface of the Sun associated with strong local magnetic activity. Spots look dark only by contrast with the surrounding photosphere, which is several thousand …