An Astronomer Studying a Galaxy Finds That Its Spectrum Shows

question 192

Multiple Choice

An astronomer studying a galaxy finds that its spectrum shows only old,low-mass,Population II stars,and photographs of the galaxy show little or no interstellar gas or dust.What kind of galaxy is this astronomer studying?

• A) elliptical
• B) spiral
• C) barred spiral
• D) irregular

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Definitions:

Communication Model

A theoretical framework that explains the process, components, and effectiveness of communication between individuals or groups.

Groupthink

is a psychological phenomenon that occurs within a group of people when the desire for harmony or conformity results in irrational or dysfunctional decision-making outcomes.

Closed Groups

Exclusive circles or communities with restricted membership, where entrance is often regulated through specific criteria or invitations.

Holism

The systems principle of nonsummativity—the whole is different from the sum of its parts. The elements of a system, functioning interdependently, cannot be aggregated; they can be understood only through their dynamic interaction.