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Submitted on 2014-12-30
In its New Year's letter for 2014, the Sun promised great solar activity to come. True to its word, sunspot numbers reached a new monthly high in February 2014, probably indicating the maximum of the ongoing solar cycle. Throughout the year, this increased sunspot activity was accompanied by plenty of strong flares, big sunspot groups and geomagnetic unrest.
Submitted on 2014-01-02
During 2013, long stretches of solar inactivity alternated with brief spurts of high flaring activity levels. The periods of solar calm featured numerous filament and prominence eruptions, with so many spectacular events they could easily fill this review. There were 12 X-class solar flares, almost as many as 2011 and 2012 combined. Yet, only 5 sunspot regions were responsible for these extreme explosions on the Sun, and most of them took place during the latter part of 2013.
Submitted on 2012-12-20
With 2012 nearing its end, it may be a good time to have a quick review of some of the more spectacular events that the Sun produced this year. Though Solar Cycle 24 (SC24) certainly has been weak so far, solar activity was quite interesting at times with the Sun producing some truly amazing events.
Submitted on 2011-12-31A compilation of the most memorable space weather moments of 2011 can be found underneath. Using the fantastic (J)Helioviewer software, a ***MOVIE*** was created containing one or more clips of each event.
Submitted on 2010-12-31A compilation of the most memorable space weather moments of 2010 can be found underneath. Using the fantastic (J)Helioviewer software, a ***MOVIE*** was created containing one or more clips of each event.
Submitted on 2009-12-31A compilation of the most memorable space weather moments of 2009 can be found underneath. Using the fantastic (J)Helioviewer software, a ***MOVIE*** was created containing one or more clips of each event. Usually, images obtained by SOHO and the STEREO spacecraft were used.
Submitted on 2008-12-31A compilation of the most memorable space weather moments of 2008 can be found underneath. Using the fantastic (J)Helioviewer software, a ***MOVIE*** was created containing one or more clips of each event. Usually, images obtained by SOHO and the STEREO spacecraft were used.
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