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Why are sunspots created? What is the reason behind them? ... Sunspots appear darker than the rest of the surface of the Sun because they are cooler. The center of a sunspot (called the umbra) has a temperature of around 3700 Kelvin while the surrounding photosphere has a temperature of 5800 Kelvin.
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curious.astro.cornell.edu/question.php?number=695
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How do sunspots form? ... Sunspots are formed continuously as the Sun's magnetic field actively moves through the Sun. The sunspots have lifetimes of days or perhaps one week or a few weeks.
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solar-center.stanford.edu/FAQ/Qspotsearth.html
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History and images of sunspots. ... Dark spots, some as large as 50,000 miles in diameter, move across the surface of the sun, contracting and expanding as they go. These strange and powerful phenomena are known as sunspots.
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www.exploratorium.edu/sunspots/
www.exploratorium.edu/sunspots/
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Sunspots are formed when magnetic field lines just below the Sun's surface become twisted and poke through the solar photosphere. The photosphere - or "ball of light" - is the familiar, visible surface of the Sun.
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science.nasa.gov/newhome/headlines/ast22jul99_1.htm
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Web Search Results for "Sunspots Formed" ... n6aq.com | N6AQ.com Amateur Radio Web Site!; Sunspot 1032 has formed within the old region 1029 from the last solar rotation. This spot group is very small at the moment. Sunspot 1033 formed towards ...n6aq.com/
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www.inbox.com/rl/te31_sr-1/Sunspots-Formed.html
www.inbox.com/rl/te31_sr-1/Sunspots-Formed.html
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In 1610, shortly after viewing the sun with his new telescope, Galileo Galilei (or was it Thomas Harriot?) made the first European observations of Sunspots.
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solarscience.msfc.nasa.gov/SunspotCycle.shtml
solarscience.msfc.nasa.gov/SunspotCycle.shtml
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How are sunspots formed? What causes them? What are they made of? ... You might be interested to know that some of your questions about sunspots -- how are they formed and what causes them -- are the same ones that scientists are now trying to answer.
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www.virtualology.com/virtualsciencecenter.com/airandspa...
www.virtualology.com/virtualsciencecenter.com/airandspacemuseum/SUNPICTURE.COM/
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Back to first slide ... View graphic version...
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physics.ucsd.edu/students/courses/fall2001/physics5/not...
physics.ucsd.edu/students/courses/fall2001/physics5/notes/ch9/tsld020.htm
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This climax is not actually not so violent, as far as we are concerned, and is only part of the natural cycle of the sun. It is not necessarily a mysterious phenomenon to those who know how sunspots are formed and why.
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members.tripod.com/birdlady_69/index-4.html
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