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April 22, 2013 05:04PM

The Sun is a beautiful thing to talk about. Without the Sun there is no life for...
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March 23, 2013 07:03PM

Very good article. Solar forcing is not mentioned in the body of the text. F...
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This Is An Interesting Source..... Your Shared Information Are Good And Reality...
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Living a green life can actually offer us a better quality of life on earth. Rep...

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Sunspots

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.  

http://www.exploratorium.edu/sunspots/

 

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Recently Updated
Model Climate Sensitivity Last Updated on 2013-04-04 at 15:05 The response of climate to a perturbation such as a change in carbon dioxide concentration, or in the flux of energy from the sun, can be divided into two... More »
Recent Climate Change - NCSE-NASA Last Updated on 2013-03-19 at 16:09 SUMMARY Webinar available. This is a data-driven module designed to address key questions about the stability of the Earth’s climate in the past and the factors... More »
Sun Last Updated on 2013-02-10 at 16:43 The Sun is the ultimate source of energy for life on Earth, and it sustains nearly all aspects of human existence. The Sun is an ongoing hydrogen fusion... More »
Video: Striking a Solar Balance - CLEAN Last Updated on 2012-07-12 at 16:41 SUMMARY Video length 3:35 min. This activity has been selected for inclusion in the CLEAN Collection based on the following review comments: This NASA video... More »
Sunspots: Increasing the Solar Energy that Reaches... Last Updated on 2012-05-07 at 18:55 Periodic changes in the alignment between the sun’s rotational axis and the gravitational center of the solar system produces intense fluctuations in vertical magnetic... More »
Activity: Exploring Regional Differences in Climate... Last Updated on 2012-02-05 at 12:31 Selected for the CLEAN Collection. The activity description was developed by CLEAN reviewers Activity takes up to four 45-minute class periods depending on how activity is... More »
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