Explain Why a Galaxy Can Collapse to a Much Smaller

question 15

Essay

Explain why a galaxy can collapse to a much smaller size than its dark matter halo.

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Definitions:

Average Value

A statistical measure that describes the central tendency or typical value of a set of numbers, often calculated as the sum of the values divided by the number of values.

Trait

A specific characteristic of an organism, which can be physical like height or color, or behavioral, often influenced by both genetics and environment.

Genetic Drift

A random process that causes allele frequencies in a population to change over generations without influence from natural selection.

Natural Selection

A fundamental mechanism of evolution where organisms with traits better suited to their environment are more likely to survive and reproduce, passing those traits to the next generation.