The energy of solar energy is energy from celestial bodies outside the earth (mainly solar energy). It is the huge energy released by the fusion of hydrogen nuclei in the sun at ultra-high temperature. Most of the energy needed by human beings comes directly or indirectly from the sun. Fossil fuels such as coal, oil, and natural gas that we need for life are all because plants convert solar energy into chemical energy through photosynthesis and are stored in plants, and then formed by buried animals and plants over a long geological age. In addition, water energy, wind energy, wave energy, ocean current energy, etc. are also converted from solar energy.