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Why are objects in space visible if they do not emit their own light?
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What objects in space emit or reflect light?
sun, stars, galaxies, nebulae, and meteors
Why can't visible light be used to study prestellar objects?
Those objects would be too cold to emit significant amounts of visible light.
What gives off visible light under an ultraviolet light?
== Fluorescence== Fluorescent objects emit visible light when stimulated by ultraviolet light.
What are the properties of a quasar?
Quasars are the most radiant objects in space. They contain a central black hole surrounded by a disk of gas and dust. They emit large amounts of radio waves but not much visible light.
What objects are visible because they emit light?
starsmeteorsfirefliesflashlightsincandescent filamentstoaster coilsLEDsparty light sticksfluorescent tubesfluorescent mineralsstatic electrical discharges
What are objects that emit light?
Objects that emit light are usually referred to as incandescent.
How does a radio telescope see objects which are too dim for an ordinary telescope?
Radio Telescope observe light of a different wavelength then optical light. Radio waves have a longer wavelength then visible light. Some interstellar objects barley emit any light in the visible spectrum but emit a significant amount of radiation in the radio spectrum. Radio telescopes enable us to view objects which emit in the radio spectrum.
What type of energy do warm objects emit and which has a longer wavelength than visible light?
heat/IR
What is the color of black?
Black is the color of objects that do not emit or reflect light in any part of the visible spectrum; they absorb all such frequencies of light.
Is Black the of color?
Black is the color of objects that do not emit or reflect light in any part of the visible spectrum; they absorb all such frequencies of light.
What objects do not emit light on their own?
planets, moon,etc do not emit light on their own.
What objects do not emit light?
wood
