Compared to its main sequence phase, how does the luminosity of a red giant generally compare?
Answer
It skyrockets, often becoming hundreds or thousands of times brighter
The energy output from the vigorous hydrogen shell fusion is so tremendous that the resulting luminosity can significantly exceed the star's previous total output from core fusion.
Related Questions
What two fundamental forces maintain equilibrium during a star's main sequence phase?What event signals the definitive end of a star's main sequence reign?When core hydrogen fusion ceases, which force immediately takes control?What process ignites in the layers surrounding the contracting inert helium core?What physical change causes a star transitioning into a red giant to appear distinctly red?Compared to its main sequence phase, how does the luminosity of a red giant generally compare?Approximately how long does a star similar to the Sun spend on the main sequence?What is the approximate upper mass limit distinguishing low-mass stars from high-mass stars post-MS?What is the rapid ignition event called when a solar-mass star begins fusing helium in its core?When plotted on an H-R diagram, how does a star move when transitioning from the main sequence to a red giant?