Multiple Choice
What must occur for an object to be considered a main-sequence star?
A) Hydrostatic equilibrium ends.
B) Nuclear fusion reactions in the core begin.
C) Helium flash occurs in the core.
D) Gravitational contraction begins.
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q32: Why are massive stars more luminous than
Q75: Which of the following factors explain why
Q76: What concept explains why both fusion and
Q77: Which of the following is considered to
Q79: What is the source of the pink
Q80: How do measurements of neutrinos from the
Q81: How does the method of energy generation
Q82: Nuclear fusion in stars is controlled by
Q83: Higher mass stars evolve more slowly to
Q109: T Tauri stars are believed to be