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    NASA | The Sun Reverses its Magnetic Poles - Forum

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    Forum moderator: arya, dethalternate 
    Forum » untoten.reich » Science, Astronomy, Nature » NASA | The Sun Reverses its Magnetic Poles (video)
    NASA | The Sun Reverses its Magnetic Poles
    rakshasDate: Saturday, 04-January-2014, 6:51 PM | Message # 1
    -- dragon lord--
    Group: untoten Sorcerer
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    The sun has "flipped upside down", with its north and south poles reversed to reach the midpoint of Solar Cycle 24, Nasa has said.

    Now, the magnetic fields will once again started moving in opposite directions to begin the completion of the 22 year long process which will culminate in the poles switching once again.

    "A reversal of the sun's magnetic field is, literally, a big event," said Nasa’s Dr. Tony Phillips.

    "The domain of the sun's magnetic influence (also known as the 'heliosphere') extends billions of kilometers beyond Pluto. Changes to the field's polarity ripple all the way out to the Voyager probes, on the doorstep of interstellar space."

    To mark the event, Nasa has released a visualisation of the entire process.

    READ more/Full article/source -


    This visualization shows the position of the sun's magnetic fields from January 1997 to December 2013. The field lines swarm with activity: The magenta lines show where the sun's overall field is negative and the green lines show where it is positive. A region with more electrons is negative, the region with less is labeled positive. Additional gray lines represent areas of local magnetic variation.

    The entire sun's magnetic polarity, flips approximately every 11 years -- though sometimes it takes quite a bit longer -- and defines what's known as the solar cycle. The visualization shows how in 1997, the sun shows the positive polarity on the top, and the negative polarity on the bottom. Over the next 12 years, each set of lines is seen to creep toward the opposite pole eventually showing a complete flip. By the end of the movie, each set of lines are working their way back to show a positive polarity on the top to complete the full 22 year magnetic solar cycle.

    At the height of each magnetic flip, the sun goes through periods of more solar activity, during which there are more sunspots, and more eruptive events such as solar flares and coronal mass ejections, or CMEs. The point in time with the most sunspots is called solar maximum.

    Credit: NASA/GSFC/PFSS

    Message edited by rakshas - Saturday, 04-January-2014, 6:52 PM
    Forum » untoten.reich » Science, Astronomy, Nature » NASA | The Sun Reverses its Magnetic Poles (video)
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