Describe the process by which energy is released in the sun and name the scientist who first proposed it.
Source of the Sun's energy: The source of the Sun's energy is the fusion of hydrogen in the interior of the Sun.
Explanation: Hydrogen nuclei in the interior of the Sun fuse under very high temperature and pressure to form helium nuclei and release a huge amount of energy. Prof. Hans A. Bethe was the scientist who first proposed it.