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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A NASA model of the CME confirms that it will miss Mercury, Venus and Earth. None of the inner planets will be affected by this powerful event. How do we know ...
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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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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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... 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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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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