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By in
on Oct 20, 2012

Inside a red giant

The inside of a red giant star in the moments before exploding as a supernova. The products of the various nuclear fusion reactions are stacked like the layers of an onion. The lightest elements (hydrogen) remain near the star’s surface while the heaviest (iron and nickel) form the stellar core. Credit: NASA (via Wikipedia)

The inside of a red giant star in the moments before exploding as a supernova.  The products of the various nuclear fusion reactions are stacked like the layers of an onion.  The lightest elements (hydrogen) remain near the star's surface while the heaviest (iron and nickel) form the stellar core.  Credit: NASA (via Wikipedia)

Inside a red giant