Discuss How Astronomers Know That Our Galaxy Contains Spiral Arms

question 28

Essay

Discuss how astronomers know that our galaxy contains spiral arms in its disk.

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Definitions:

Automatic

Processes or behaviors that occur with little or no conscious awareness or control, often as a result of learning and repetition.

Creatively

In a manner involving the use of the imagination or original ideas to create something; inventively.

Priming

A psychological technique that involves the subconscious activation of certain associations, influencing behavior and perceptions.

Retrieval

The process of getting information out of memory storage.