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 10/18/2010 11:28 AM by  Emilia Kilpua
Sun´s temperature
 1 Replies
You are not authorized to post a reply.
Author Messages



10/18/2010 7:52 AM

    My students would like to know how scientists can measure the temperature in the inner core of the Sun.

    Tags: temperature

    Emilia Kilpua

    New Member

    New Member

    10/18/2010 11:28 AM

    This is a very good question! And tricky since we cannot measure the temperature in the solar core from the solar spectrum like the surface temperature. However, we can get a simple approximation from the fact that the Sun is in equilibrium: the inward pressure by the gravity has to be balanced by the outward pressure from the solar energy output. Since we know the solar radius and the mass we can estimate the core temperature that is needed to hold the Sun up against gravity.

    You are not authorized to post a reply.

    Twitter Feed

    Scientist Leaderboard

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