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An Astronomer Observes 1,000 Galaxies Positioned Within 5 Mpc of Each

question 19

Essay

An astronomer observes 1,000 galaxies positioned within 5 Mpc of each other in a galaxy cluster.What other quantity or quantities should he or she measure to determine the mass of this cluster?


Definitions:

Highly Consistent Behaviours

Actions or reactions that are predictable and stable over time across different situations.

Fundamental Attribution Error

The tendency to explain someone's behavior based on internal factors, like character or intention, rather than external factors.

Situational Attributions

The process of attributing behavior to external factors or circumstances rather than to internal characteristics.

Dispositional Attributions

The tendency to ascribe observed behaviors to an individual’s inherent traits or personality rather than to external situational factors.

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