Which statement 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) We have never witnessed a significant change in any single star.
D) At any moment, we can see stars in every phase of evolution.

Question

Quizplus · Accepted Answer

Stars exist in various stages of their life cycles, and because the universe is vast and contains countless stars, we can observe stars in every phase of evolution at any given time.

Which Statement Characterizes the Human Study of Stellar Evolution