What color is the universe?

A colorful shot of nebula and stars in deep space. (Image credit: Shutterstock)

When you look up at the night sky, it’s easy to think that the universe is a never-ending sea of blackness. But if you measured the visible light from all of the luminous celestial bodies out there, what would the average color of the universe be?

Let’s get this out of the way first: It’s not black.

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