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dwarf galaxies

One of the few galaxies with a well-studied stellar halo is our neighbor, Andromeda, depicted here in the graphic. The reason Andromeda’s halo can be investigated so thoroughly is simply a matter of distance, both being close enough and bright enough that we can see the full picture with our current class of telescopes.

NASA’s Hubble Provides Bird’s-Eye View of Andromeda Galaxy’s Ecosystem

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