Scientists track solar cycles by counting sunspots -- cool planet-sized areas on the Sun where intense magnetic loops poke through the star's visible surface.
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Among the sunspot's dark cores, magnetic poles of opposite polarity are bumping together in explosive proximity. As a result, AR3664 now poses a threat for X- ...
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Sunspot Plotter. The sunspot plotter is easy to use. For example, select your birth date from the pull-down menus and the plotter instantly shifts to the ...
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... MobileGlossary.html 26-Mar-2014 01:50 2611 NEAs.html 26-Mar-2014 01:49 412 WS_FTP.LOG 21-Jan-2001 01:07 6766 aphelion.html 03-Jul-2008 19:39 9801 bakeout ...
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A range of heliographic longitudes in either the northern or southern solar hemisphere (seldom both at the same time) containing one or more large and complex ...
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This figure shows a series of solar flares detected by NOAA satellites in July 2000: Each category for x-ray flares has nine subdivisions ranging from, e.g., C1 ...
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Glossary · News Archive · Newsroom · Subscribe · Annual Meeting · Feedback. Search form. Search using USASearch. NOAA Scales. https://services.swpc.noaa.gov.
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Space Weather Glossary. Aphelion · Big Sun · CCD Bakeout · Coronal Holes · Earth's Red Shadow · Fireball Frequency · Geomagnetic ... Sunspot Magnetic Classes.
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