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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 10/26/2018 10:28 AM by  Terry Kucera
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Miss McDonald's class


10/26/2018 9:47 AM
    How big is the sun?

    Terry Kucera

    Basic Member

    Basic Member

    10/26/2018 10:28 AM
    Compared to things we think about in our regular lives, the Sun is huge. It’s diameter is 1,390,000 km (about 864,000 miles) across. You could fit about 109 Earths along the diameter of the Sun. Sunspots regions - dark active magnetically areas on the surface of the Sun can sometimes be a number of times the size of the Earth.

    As stars go it is larger than many, but some are much larger.
    Here is a video about sizes of different planets and stars:
    Also see

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