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Loading contentA small galaxy with far fewer stars than a giant like the Milky Way. Dwarfs are by far the most numerous galaxies, and many orbit larger ones as satellites; they are dominated by dark matter.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.