Question

How is the sun an example of nuclear energy?

Answer 1

Answer
Nuclear energy is what powers the sun.
Explanation:
The material of the sun (primarily hydrogen) contracted into into itself by gravitation to form the body. The extreme pressure forced the hydrogen atoms to fuse (fusion) into helium, releasing huge mounts of energy.
As stars age this process not only continues, but advances to the formation of heavier elements as well. The lifecycle of stars is defined by their initial mass, the rate of reactions and the energy release compared to the gravitational force of its mass.