1. Hydrogen Atoms: The sun is primarily made up of hydrogen atoms, the simplest element.
2. Extreme Pressure and Heat: The immense pressure and heat in the sun's core force these hydrogen atoms to collide with incredible force.
3. Fusion: This force overcomes the natural repulsion between the positively charged hydrogen nuclei, causing them to fuse together and form helium atoms.
4. Energy Release: This fusion process releases a tremendous amount of energy in the form of:
* Light: This energy is emitted as photons, which are particles of light.
* Heat: This energy is also released as heat, which is the kinetic energy of particles.
5. Continuous Process: This fusion process continues constantly, creating a continuous stream of light and heat that radiates outwards from the sun.
In essence, the sun is a giant, naturally occurring nuclear reactor, converting hydrogen into helium and releasing energy in the form of light and heat.