Relatively cool regions in the solar photosphere that appear dark They contain intense magnetic fields which provide the energy for solar flares Sunspots occur in groups They underlie plage areas
Temporary magnetic disturbances in the photosphere They appear dark because temperatures are considerably lower than in surrounding areas More about sunspots
Darker patches on the solar photosphere; their temperature is around 4000ºC(as against about 6000ºC for the general photosphere), so that they are dark only by contrast; if they could be seen shining on their own, their surface brilliance would be greater than that of an arc-light
Relatively dark spots on the sun that contain intense magnetic fields The sunspot activity on the sun is not constant and varies on short times scales (day to day) There is also an 11-year sunspot cycle where the amount of sunspots visible on the sun varies Sunspots are easily visible on the images we get using our heliostat solar telescope
An area seen as a dark spot on the photosphere of the Sun Sunspot are concentrations of magnetic flux, typically occurring in bipolar clusters or groups They appear dark because they are cooler than the surrounding photosphere