people discoverd it in anime
Prominence Sunspot in 1945
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.
A sunspot is the coolest part of the sun that humans have discovered, but it is still very hot!
The sunspot cycle is about 11 years in length.
A Large Sunspot can be up to about 10,000 miles across.
The average sunspot cycle is approximately 11 years, with periods of high sunspot activity followed by lower activity levels. This cycle is known as the solar cycle or the sunspot cycle.
An area on the sun that is cooler is called a sunspot.
You shouldn't be posting your homework questions on WikiAnswers; especially not when the question does not include the relevant information. You can see the daily sunspot numbers on http://www.spaceweather.com.
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The Sun is rising close to its high, or peak sunspot cycle.
On July 14, 2007, the Sunspot number was 38. This was late in Solar Cycle 23. You can see the daily sunspot number and interesting astronomical phenomena at spaceweather.com.
The center portion of a sunspot is called the umbra. It is the darkest part of the sunspot where the magnetic field is strongest and the temperature is cooler than the surrounding areas.