Most images you see are colour adjusted by the people making the images. A lot of the light wave they get is outside the visible spectrum for humans, UV and X-rays etc… it makes it make more sense for both scientists and more visually cool for people if its shifted a bit to be in the visible band, showing more contrast and brightness. A lot of very distant stuff just kind of wouldn’t look like anything or be very dull in comparison to surroundings if they left real light levels and colours.
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