What are some sources of light (luminous)?

Sources of light, or luminous sources, include natural phenomena such as the sun and stars, which emit light through nuclear fusion. Artificial sources encompass a wide range of electric options like incandescent bulbs, fluorescent lights, and LEDs. Other examples include fire, lightning, and bioluminescent organisms like certain jellyfish and fireflies. Each of these sources produces light through different mechanisms, contributing to the illumination of our environment.