This is a list of sources of light. Light sources include light bulbs and stars like the Sun. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that comes from them.
Incandescence is the emission of light from a hot body as a result of its temperature.
Luminescence is emission of light by a substance not resulting from heat.
In gemology, aventurescence (sometimes called aventurization) is an optical reflectance effect seen in certain gems.
Bioluminescence is light resulting from biochemical reaction by a living organism.
Cathodoluminescence is light resulting from a luminescent material being struck by electrons.
Chemiluminescence is light resulting from a chemical reaction.
Cryoluminescence is the emission of light when an object is cooled.
Crystalloluminescence is light produced during crystallization.
Electrochemiluminescence is light resulting from an electrochemical reaction.
Electroluminescence is light resulting from an electric current being passed through a substance.
Mechanoluminescence is light resulting from a mechanical action on a solid.
Photoluminescence is light resulting from absorption of photons.
Radioluminescence is light resulting from bombardment by ionizing radiation.
Thermoluminescence is light from the re-emission of absorbed energy when a substance is heated.