Penumbra
Sunspot maximum and sunspot minimum are the points in time (roughly 6 years apart) when the sun is producing the most, or the least sunspots. In the past this has been measured both by sunspot area and sunspot count and is directly tied to the solar magnetic cycle.
sunspot(s)
A cooler area on the sun is called a sunspot
A sunspot.
Penumbra
penumbra.
penumbra.
A sun spot
An area on the sun that is cooler is called a sunspot.
Sunspot maximum and sunspot minimum are the points in time (roughly 6 years apart) when the sun is producing the most, or the least sunspots. In the past this has been measured both by sunspot area and sunspot count and is directly tied to the solar magnetic cycle.
sunspot(s)
Sunspot
a sunspot
A cooler area on the sun is called a sunspot
Th
A "sunspot."