How do scientists know that the Sun has a core?
Obviously, nobody can see the center of the Sun and we’ve never sent a space probe into the Sun, either. However, we think we know what it is like in there. The only thing that provides enough energy to heat a star for billions of years is nuclear fusion. We know the pressures and temperatures needed for this to take place, so we can figure out from that what the center of the Sun (the “core”) must be like. Check out this web site for more on the Sun’s core: http://www.astro.uva.nl/demo/sun/home.htm (The Virtual Sun: Its Core) Go back to TOP.
