Which of These Statements BEST Characterizes the Human Study of Stellar

question 84

Multiple Choice

Which of these statements BEST characterizes the human study of stellar evolution?

• A) The changes in the observable cosmos over a human lifetime are profound.
• B) A human lifetime is long enough to witness the evolution of a star through much of its evolutionary history.
• C) Astronomers have never witnessed a significant change in any single star.
• D) At any moment. Stars can be observed in every phase of evolution.

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