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Once we get outside the dark matter halo of a galaxy,how should the speed of an orbiting body such as a satellite dwarf galaxy depend on its distance from the giant galaxy's center?
Prototype Theory
A theory in which concepts or word meanings are formed around average or typical values.
Definitional Theory
A theory that focuses on how terms or concepts are defined and the implications of these definitions for understanding and research.
Family Resemblance Structure
An overlapping set of semantic features shared by members of a category, such that no members of the category need to have all of the features but all members have at least one of them.
Concept
A general idea or understanding that is foundational to further knowledge and understanding in any domain.
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