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The energy of the Sun is produced by thermonuclear fusion.

The energy is produced in the hot dense core of the Sun by the joining together of 4 atoms of Hydrogen to make one atom of Helium.

[The core of the sun, like most stars, is a huge ball of protons which can also be called hydrogen nuclei. Under the conditions of high pressure and high temperature produced by gravitational force, some of the protons get changed into neutrons, and the p+ and no particles get squeezed into pairs, then triplets and finally quartets of 2 p+ and 2 no particles called an alpha group, which can also be called a helium nucleus]

The point is that this helium nucleus is lighter (contains less mass) than the 4 original hydrogen atoms. This lost mass is turned into energy as Einstein described (E-MC2, where E is the energy produced, M is the mass lost and C is the velocity of light (299,792,458 meters per second) squared). In total the Sun loses 4 million tons of mass a second due to this process and therefore produces a lot of energy!.

The energy in the core is produced as light energy and the core is so dense that it takes 1 million years for a photon of light produced by the Sun's core to work its way up through the Sun to the outer layers which 'boil'. When the energy reaches the surface of the Sun, it again leaves the Sun in the form of radiated (light) energy and it is this radiated energy that you feel hitting you when you are out in the Sun. The light from the Sun drives the Earths weather, warms our seas and is used by plants to make sugars which feeds the planet's animals. We live on Sunlight!.

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12y ago

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