Question

Why are giant and supergiant stars rare?

Answer 1

Helium flash is caused by the ignition of helium fusion in a core that contains degenerate electrons.

Pressure does not depend on temperature for a white dwarf because the electrons are degenerate. Why are giant and supergiant stars rare to observe? The giant or supergiant stage is very short.

Answer 2

ANSWER

Giant and supergiant stars rare to observe because the giant and supergiant stage is very short.

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