Tag Archives: perihelion

Comet ISON Passage

Solar activity spikes as Comet ISON approaches perihelion and continues as the comet’s remnant exits the NASA/ESA SOHO LASCO C3 viewing area. Solar volatility included some robust X-ray flares and coronal mass ejections, all of which serve to distinguish the comet’s perihelion window from the much calmer period that immediately precedes it.

 
 
 
 

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