Ask Ethan: How do scientists color the Universe?
Briefly

The colors we see in images of space are not always what is naturally present; they are often assigned to represent different types of gases, such as blue for oxygen and red for hydrogen.
Elizabeth Belshaw's query highlights the importance of color in astronomical images, which are not merely aesthetic but represent complex data that can reveal significant information about celestial objects.
The choice of coloring in space visualization maximizes information and aids comprehension for both amateur sky watchers and professional scientists, bridging understanding across different expertise levels.
Understanding the structure of the eye and its capabilities, including how rod and cone cells function, is essential to grasping why certain colors are assigned in space imagery.
Read at Big Think
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