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



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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



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    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
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