What is a helium flash?
A. The ignition of helium shell burning in a high-mass star with a carbon core.
B. A sudden brightening of a low-mass star, detectable from Earth by observing spectral lines of helium.
C. It is another name for the helium fusion reaction.
D. The sudden onset of helium fusion in the core of a low-mass star.
Answer:D
What is a helium flash?
A. The ignition of helium shell burning in a high-mass star with a carbon core. B. A sudden brightening of a low-mass star, detectable from Earth by observing spectral lines of helium. C. It is another name for the helium fusion reaction. D. The sudden onset of helium fusion in the core of a low-mass star.