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You draw a circle around a circle.
Its the distance from the center of the circle to the edge of the circle.
The cord of a circle that contains the center of that circle is a diameter of that circle.
If you draw a line from the center of a circle to the edge of a circle, you have drawn the radius of the circle. If you draw a line from the edge of a circle through the center of the circle and on to the edge on the opposite side, you have drawn the diameter of a circle. The radius of a circle is one half the diameter of a circle.
it becomes a circle inside another circle
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.
An example of a sunspot is the group of dark spots visible on the Sun's surface, caused by intense magnetic activity. Sunspots appear darker than their surrounding regions due to their lower surface temperatures. They usually occur in regions of strong magnetic fields on the solar surface.
The sunspot cycle lasts around 11 years. It is characterized by a period of increasing sunspot activity, followed by a period of decreasing activity.
A Large Sunspot can be up to about 10,000 miles across.
No, meteors do not cause sunspots. Sunspots are caused by strong magnetic activity on the Sun's surface leading to cooler, darker patches. Meteors are small rocks or debris that enter Earth's atmosphere and burn up due to friction with the air.
An area on the sun that is cooler is called a sunspot.
Sunspot regions on the Sun are areas of concentrated magnetic activity that appear darker than their surroundings due to lower temperatures. Studying sunspots can provide insight into the Sun's magnetic field dynamics, solar activity, and space weather phenomena like solar flares and coronal mass ejections. Monitoring sunspots is important for understanding how solar variations impact Earth's climate and technologies.
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 Sun is rising close to its high, or peak sunspot cycle.
No
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.