Solar Week - Ask a Question

Come here during Solar Week (next one: March 22-26, 2021) to interact. To post a question, click on your area of interest from the topics below, and then click on the "Ask New Question" button. Or EMAIL or tweet or plant in Answer Garden your question about the Sun or life as a scientist to us -- and watch for it to appear here.  You can also visit our FAQs (frequently asked questions). In between Solar Weeks in October and March, you can view all the archives here.

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Last Post 3/31/2017 12:58 PM by  Mitzi Adams
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lisa t


3/31/2017 6:45 AM
    Is it true that sunspots are not really dark, but they only seem to be as viewed from earth in a telescope?

    Mitzi Adams

    Basic Member

    Basic Member

    3/31/2017 12:58 PM
    Hi Lisa,

    Sunspots appear dark on the solar disk because they are cooler than the surrounding unspotted solar "surface" (photosphere). If you could safely view a sunspot without a telescope, and you can do this with PROPER FILTERS when the spots are very large, they would still appear dark; the darkness of the spots has nothing to do with the telescope, only relative temperature.
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