What Caused Early Astronomers to Believe That Our Galaxy Is

question 63

Multiple Choice

What caused early astronomers to believe that our galaxy is only about 6,000 light-years across?

• A) Telescopes were not powerful enough to observe stars farther away.
• B) Interstellar dust blocked visible light from stars farther away.
• C) Stars farther away could not be resolved as individual objects.
• D) Astronomers miscalculated the distances to stars, believing that the stars were 50 times closer than they actually were.
• E) Astronomers assumed all red stars were faint main-sequence stars, and they confused them with the more luminous red giants.

Comprehend strategies for framing messages when dealing with skeptical or resistant audiences.

Describe the importance and effectiveness of storytelling in business communications.

Recognize the benefits of presenting information in a well-organized manner in business communications.

Understand what constitutes the scope of a business message and its implications.

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Definitions:

Heart Rate

The number of heartbeats per unit of time, usually per minute.

Blood Pressure

The pressure of the circulating blood against the walls of the blood vessels after being ejected from the heart.

Heart and Lungs

Key organs in the human body where the heart pumps blood and the lungs oxygenate it, playing crucial roles in the circulatory and respiratory systems respectively.

Exercise

Physical activity that is planned, structured, repetitive, and aims to improve or maintain one or more components of physical fitness.