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Last Post 3/22/2012 12:57 PM by  Yan Li
sunspots
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Anonymous





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3/22/2012 7:22 AM

    Melissa W (SA)

    We seen some pictures earlier on sunspots, taken back on the 10th of the month. What happened to all of them?
    Tags: sunspots

    Dawn Myers



    Basic Member


    Posts:151
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    3/22/2012 9:37 AM
    Hello Melissa The Sun has a rotation of about 25 days at the equator so a sunspot that you could see on the disk on the 10th is likely on the back side of the Sun at the moment. Thanks Dawn

    Yan Li



    New Member


    Posts:55
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    3/22/2012 12:57 PM
    Hi Melissa, Also sunspots have a life-time of days to weeks. In addition to hiding back at the farside of the Sun, some of them may have disappeared/died. Sunspots emerge from below the surface of the Sun, and soon begin to decay, the process of which is an active research topic, meaning not fully understood. Yan

    Forums Archives of previous runs of SolarWeek Sunspots
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