Pick of The Week
 
 

Sunspots Coming Around (April 2, 2002)

  • Movie (Quicktime,1.8M), smaller version (Quicktime,324K)
  • Movie (MPEG,2.4M), smaller version (MPEG,192K)
  • Higher resolution version (TIF,3.8M)
  • A growing clique of rather large sunspot groups rotated into view over a period of several days from March 29 to April 2. As of April 2, they were facing right towards Earth and have the potential to be the source of significant solar storms. The largest of these spots is several times the size of Earth. Sunspots are the visible tracers of magnetically active regions. Because they are somewhat cooler (4,000 C) than the rest of the Sun's surface (6,000 C), they appear darker.

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