Why are galaxies the colors that they are in photographs?

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They’re always bright, vibrant colors. What gasses are burning, and whats happening?

In: Chemistry

3 Answers

Anonymous 0 Comments

If you see a galaxy through a telescope with the naked eye, it looks more like a dim gray smudge. The vibrant colors only show up when you take a long exposure image.

The color comes mostly from stars, there are so many of them in a galaxy that they all blend together into a blurry glow. There are also interstellar gasses which can be illuminated by starlight or block starlight.

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