Sunspots can be observed on the surface of the Sun. They appear as dark areas that are cooler than their surrounding regions due to intense magnetic activity. Observing sunspots requires proper equipment such as solar telescopes or solar filters to safely view the Sun without damaging your eyes.
You should never look directly at the Sun to try to see a sunspot, as they are not as dark as they look in photographs. The magnetic disturbance that causes a sunspot will seldom occur in the same location twice.
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.
The sunspot cycle is about 11 years in length.
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.
The darkened area of a sunspot is called the umbra. It is the central region of a sunspot where the magnetic field is strongest, causing the area to appear darker compared to the surrounding photosphere of the Sun.
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.
You should never look directly at the Sun to try to see a sunspot, as they are not as dark as they look in photographs. The magnetic disturbance that causes a sunspot will seldom occur in the same location twice.
AR1718 is a designation for a sunspot. See related links for more details.
Prominence Sunspot in 1945
Sunspot. See related question
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.
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.
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.
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