The Sun: Then and Now (Jul 11, 2008)

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If we compare both the current Sun and the Sun in 2002 in extreme UV light from SOHO, we can quickly see what a difference half a solar cycle makes. Back then (August 4-7, 2002), the sun was near its maximum level of activity. At any period in this time frame, it was usually very dynamic with many active regions producing a number of solar storms. (We could have chosen an extremely busy period but this one was more representative.) Six years later, the sun (July 4-7, 2008), is very quiet with no active regions at all and neatly organized polar areas (these appear darker). This is all part of the normal 11-year solar cycle. We are wondering when the next rise of solar activity will start to occur.

SOHO began its Weekly Pick some time after sending a weekly image or video clip to the American Museum of Natural History (Rose Center) in New York City. There, the SOHO Weekly Pick is displayed with some annotations on a large plasma display.

If your institution would also like to receive the same Weekly Pick from us for display (usually in Photoshop or QuickTime format), please send your inquiry to steele.hill@gsfc.nasa.gov.