What takes an extremely high temperature for nuclear blank to occur inside the sun?

Nuclear fusion occurs inside the sun when temperatures reach around 15 million degrees Celsius (27 million degrees Fahrenheit). At these extreme temperatures, hydrogen nuclei have enough kinetic energy to overcome their electrostatic repulsion and collide with sufficient force to fuse together, forming helium and releasing a tremendous amount of energy in the process. This energy powers the sun and allows it to radiate light and heat into space.