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What is the "safety valve" that operates in normal (nondegenerate) stars?
Q19: Based on observations of supernova explosions in
Q22: Which of these do NOT characterize Cepheids
Q72: What physical mechanism is responsible for the
Q80: Consider stars of these masses (in solar
Q92: Where would one expect to find heavy
Q106: A star ascending the red-giant branch for
Q114: A white dwarf star, as it evolves,
Q192: In the study of neutron stars, what
Q207: By what standard technique did astronomers in
Q298: Hydrogen in molecular form, H<sub>2</sub>, is thought