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.

Question

Quizplus · Accepted Answer

Stars evolve over millions to billions of years, far exceeding a human lifetime. However, because there are countless stars at various stages of evolution, astronomers can observe stars in all phases of their life cycles simultaneously, providing insights into stellar evolution despite the vast timescales involved.

Which of These Statements BEST Characterizes the Human Study of Stellar