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Jan 16

THE SUN'S MAGNETIC FIELD HAS A GOOD MEMORY


By compiling all the solar wind data gathered in the space age, NASA scientists have concluded that even though the solar magnetic field is constantly changing, it always returns to its original shape and position.

       "We now know that the Sun's magnetic field has a memory and returns to approximately the same configuration in each 11- year solar cycle," said Dr. Marcia Neugebauer, a Distinguished Visiting Scientist at NASA's Jet Propulsion Laboratory, Pasadena, Calif. "Current theories imply that the field is generated by random, churning motions within the Sun and should have no long- term memory. Despite this expectation, the underlying magnetic structure remains fixed at the same solar longitude."

       "It's interesting that the solar magnetic field varies in strength and direction, but not in longitude," said Dr. Edward Smith, senior research scientist at JPL.

       The solar wind is composed of charged particles ejected from the Sun that flow continuously through interplanetary space. The solar wind carries Read ON................

Posted by Jay Roberts at 05:54 PM | Permalink

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