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Solar Week - Ask a Question » Archives of previous runs of Solar Week » 2005 Sep26-30 » Sunspots » sunspots

sunspots

Last post 09-30-2005 2:16 PM by Dawn Myers. 1 replies.
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  • 09-30-2005 12:26 PM

    sunspots

    Reply Contact

    Kester T (WM)

     

    Why do you call a sunspot a "spot" on the sun, and how big can they get?

     

     

  • 09-30-2005 2:16 PM In reply to

    • Dawn Myers
    • Top 10 Contributor
    • Joined on 02-27-2005
    • Goddard Space Flight Center
    • Posts 58

    Re: sunspots

    Reply Contact
    Hello Kester,

    To be honest with you, I don't know the "official" reason for the name of sunspot. But as for your second question, the largest sunspot group since 1900 was one in 1947 which measured 6132 millionths of the solar disk, or 18 times the surface area of the Earth.

    Have a nice weekend
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