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.

PrevPrev Go to previous topic
NextNext Go to next topic
Last Post 3/22/2011 3:04 PM by  Irina Marinova
 1 Replies
You are not authorized to post a reply.
Author Messages



3/22/2011 10:15 AM

    Brian F

    how big are the spots on the sun right now?

    Tags: sunspots, size, Earth, photosphere, SOHO

    Irina Marinova

    New Member

    New Member

    3/22/2011 3:04 PM
    Sunspots are regions on the surface of the sun that are cooler and darker than the surrounding area (the photosphere). Sunspots change in size as they move across the surface of the sun, however some sun spots have been observed to be as large as 80,000km. This is about six times the size of the Earth! NASA and the European Space Agency have a satellite in orbit around the sun (called SOHO) that takes pictures of the sun every day. You can see what the sun looks like right now (including sun spots) at this website: Today (March 22), it looks like there are two groups of sunspots. It seems to me that these sunspots are about the size of Earth or a little bit larger!
    You are not authorized to post a reply.

    Twitter Feed

    Scientist Leaderboard

    Name # of replies
    Multiverse skin is based on Greytness by Adammer