Does the sun create energy with fission or fusion?

Answer 1

The Sun is a GV2 class star, commonly called a "yellow dwarf". The "V" indicates that the Sun is a main sequence star (plotted on stellar color rather than brightness), and like all dwarf stars, its energy is derived from nuclear fusion of hydrogen into helium. The Sun fuses an estimated 620 million metric tons of hydrogen each second in it's core.

Answer 2

The sun creates energy through nuclear fusion, where the high pressure and temperature at its core cause hydrogen atoms to combine and form helium, releasing energy in the process. This process is what powers the sun and provides heat and light to Earth.