An artist's picture of the solar interior. Energy is generated in the
solar core
NASA
The Solar Core
The solar core is made up of a really hot and dense gas (in the
plasma state). The temperature of 15 million kelvins
(27 million degrees Faranheit) keeps the core at a gaseous state.
The core is where the energy of the Sun is made. The density and temperature are just right for nuclear fusion reactions to take place. These reactions release energy in two forms, light (electromagnetic radiation) and particles (in particular
neutrinos). Despite the reactions, the Sun's core is a very dark place!
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