Answer
The force on the sun of gravity is much greater than on earth because of the relative masses. Thus the nuclear particles on the sun are already held much closer together than the equivalent nuclear particles on earth. Less energy is required on the sun to force fusion collisions between nuclear particles.
Work Step by Step
The force on the sun of gravity is much greater than on earth because of the relative masses. Thus the nuclear particles on the sun are already held much closer together than the equivalent nuclear particles on earth. Less energy is required on the sun to force fusion collisions between nuclear particles.
