Stars.
Some living organisms (fireflys, etc)
Sorry - I thought that was "what"
As for why - 1) if an object's temperature gets high enough then the escaping (heat) energy "glows" ... thus stars, volcanoes, etc.
2) some biochemical reactions produce a glow (with little or no heat) ...
the why bother varies, to hunt (like a flashlight), to lure (act as bait), to sexually attract a mate.
planets, moon,etc do not emit light on their own.
Moon
The object that shines by its own light is called a luminous object. These objects emit light through a natural process, such as the sun or a star.
Stars, galaxies, nebulae, and other luminous celestial objects emit light in space. These objects emit different wavelengths and intensities of light based on their composition and physical characteristics.
Objects in space that produce their own light are known as luminous objects. Some examples include stars, such as our Sun, which emit light through the process of nuclear fusion, and hot planets like Jupiter, which reflect and emit light due to their internal heat. Other examples include galaxies, supernovae, and nebulae that emit light due to various astronomical processes.
No, most objects do not give off their own light. Objects either reflect light from a light source or emit light when they are heated to a high temperature.
planets, moon,etc do not emit light on their own.
Luminous
Non-luminous. Objects which produce light of their own or give out or emit their own light are called luminous objects. Objects which do not produce light of their own, on the other hand, are called non-luminous objects. Luminous objects are objects like stars, sun and other celestial bodies which give out their own light. Objects surrounding us are not such light emitting objects. Therefore, we are surrounded by non-luminous objects.
False. We can see objects that reflect light from sources like the sun or artificial light sources, even if they don't emit their own light.
Objects that produce or emit light are called luminous objects. These objects generate their own light through a process such as incandescence or bioluminescence. Examples include the sun, light bulbs, and fireflies.
Provides light
starsmeteorsfirefliesflashlightsincandescent filamentstoaster coilsLEDsparty light sticksfluorescent tubesfluorescent mineralsstatic electrical discharges
Moon
No. Most objects you see need to be shined on by a source of light, otherwise you don't see them.
Non-luminous refers to objects or substances that do not produce light on their own. These objects rely on an external light source to be visible, as they do not emit their own light. An example of a non-luminous object is a table.
Objects that do not emit light are known as non-luminous objects. Examples include a chair, a table, a rock, or any object that does not generate its own light but instead reflects light from an external source.