A star (no matter what its mass) spends most of its life:
A) as a protostar.
B) as a main sequence star.
C) as a planetary nebula.
D) as a red giant or supergiant.
E) as a T Tauri variable star.
Correct Answer:
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Q28: Refer to the figure above. What is
Q29: Refer to the figure above. What is
Q30: When a star's inward gravity and outward
Q31: Just as a low-mass main sequence star
Q32: The "helium flash" occurs at what stage
Q34: What inevitably forces a star like the
Q35: A star is on the horizontal branch
Q36: What are black dwarfs?
A)the lowest mass main
Q37: During the hydrogen shell-burning phase:
A)the star grows
Q38: Which of the following elements contained in
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