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Originally Posted by Rob Instigator
they do not "color in" all the pics.
some are in true color (visible wavelength)
some are in x-rays (non visible to humans) so they assigne colors to the ends of the xray spectrum so you can see the structure
some are in infrared which gives a "gray" tonal image so they assigne colors to the different spctra of difrerent elements
some are in gamma rays. (non visible to human eyes)
some are in radio waves (non visible)
etc
it is not arbitrary
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The elaborator is in the house!
