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Thread: old star starspots

  1. #1
    Join Date
    May 2004
    Posts
    1,674

    old star starspots

    Do old stars lose their starspots? Will the sun be in a permanent Maunder Minimum in a few million millennia?

  2. #2
    Join Date
    Sep 2006
    Posts
    1,775
    As a general rule, young stars tend to be more active than older ones; that is, they tend to have stronger magnetic fields, rotate faster, show stronger chromospheric emission, and have more prominent sunspots. Since some of these phenomena are physically linked, that all makes some sense.

    So, yes, I would say, it's not unlikely that the Sun of one billion years in the future may have fewer spots than our current one.

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