In the Self-Propagating Star Formation Theory

question 129

Multiple Choice

In the self-propagating star formation theory

• A) spiral arms are formed and sustained primarily by the actions of solar-mass stars because there are so many more of them than there are high-mass stars.
• B) spiral arms are poorly defined because they are formed and sustained primarily by the actions of short-lived massive stars.
• C) the passage of dust clouds through the spiral arms triggers star formation.
• D) spiral structure results with thin, well-defined arms.

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James Madison

An American statesman, diplomat, expansionist, philosopher, and Founding Father who served as the fourth president of the United States from 1809 to 1817, known as the "Father of the Constitution."