Very common, but eclipsed by their spiral poster child relations.
I guess being dwarf's they miss the "tall dark and handsome" appeal of the larger galaxies.
Though they may lack a certain amount of aesthetic appeal they are however still valuable to science.
In two separate studies using NASA’s upcoming James Webb Space Telescope, a team of astronomers will observe dwarf galaxy companions to the Milky Way and the nearby Andromeda galaxy. Studying these small companions will help scientists learn about galaxy formation and the properties of dark matter, a mysterious substance thought to account for approximately 85% of the matter in the universe.
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