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 an extremely hot and dense gas (in the
plasma state). Despite a density of 160,000
Kg/m3, the temperature of 15 million kelvins
(27 million degrees Faranheit) prevents the core from reaching the solid state.
The core is the region where the energy of the Sun is produced.
The density and temperature are such that nuclear
fusion reactions can take place: these reactions release energy both in the
form of electromagnetic energy (gamma rays) and particles (in particular
neutrinos). Despite the reactions, the Sun's core is a very dark place!
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