The most important factor affecting a star's main-sequence lifetime is
A) Radius
B) Mass
C) Chemical composition
D) Surface temperature
Correct Answer:
Verified
Q15: What is the general name for a
Q16: The age of a cluster can be
Q17: Based on your knowledge of the H-R
Q18: All the stars in a cluster are
Q19: As soon as its core hydrogen is
Q21: The sequence of reactions by which stars
Q22: What is the triple alpha process?
A)A fraternity
Q23: What happens when electrons become degenerate?
A)Their pressure
Q24: Which of the following is a key
Q25: One reason that Cepheid stars are important
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