SOLAR SYSTEM

Detailed explanation-1: -Sun produces heat and light by nuclear reactions i.e. nuclear fusion of hydrogen into helium in its core.

Detailed explanation-2: -The sun, like all stars, contains mostly hydrogen. It produces energy from nuclear fusion reactions where Hydrogen is converted to Helium. This fusion reaction occurring inside the sun produces a lot of energy in the form of heat and light.

Detailed explanation-3: -The Sun makes energy through the fusion of hydrogen into helium at the Sun’s core. Fusion creates a huge amount of energy, so much energy that we cannot successfully duplicate it on Earth for a sustained period of time.