PICK OF THE WEEK
Pick of The Week
Magnetic activity and active regions (September 17, 2001)
Higher resolution version (TIF,2.4M)
| Sun in ultraviolet light (left) that shows active regions (brightest white) compared to a magnetic image on the same day (right) reveals a close correlation. The black and white areas indicate north and south polarity. Active regions are areas of intense magnetic activity that are often the sources of solar storms. |
