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Dwarf elliptical galaxies are elliptical galaxies that are much smaller than others, classified as dE. They are quite common, and are usually companions to other galaxies. There are at least two dE dwarf ellipticals in orbit around the Andromeda galaxy. Examples of Dwarf Ellipticals: A subtype of dwarf ellipticals is called a dwarf spheroidal galaxy. Most evidence indicates that most small "ellipticals" do not have properties similar to those of large ellipticals. Instead, they are probably related to irregular galaxies. Therefore, many astronomers have taken to using dwarf spheroidal galaxy to refer to this type. There is evidence that when our galaxy (the Milky Way) collides in 3-4 billion years with the Andromeda Galaxy, the newly combined galaxy will become a elliptical galaxy.
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