The vast majority of the light in the universe is colored with X rays, Alpha/Beta/Gamma rays, Infrared and Ultraviolet, Radio and Microwaves
So when scientists take a picture of a distant nebula, most of it wouldn’t actually look like much of anything to your eyes. But if you assign each different kind of invisible light a color our eyes can recognize, they are artificially colored, but it makes it easier to make out details
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