Galaxies Have Billions of Stars… So Why Are They Almost Empty? | Space Documentary 2026
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YouTubeHow the Universe Works
Galaxies Have Billions of Stars… So Why Are They Almost Empty? | Space Documentary 2026
Galaxies have billions of stars… so why are they almost empty? When we look at images of galaxies, they seem bright, dense and crowded. Spiral arms glow with starlight. Galactic centers shine with millions of stars packed together. From far away, a galaxy looks like a solid island of light floating in darkness. But that image is misleading ...
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