Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: As luminosity of stars increases greatly with mass , the luminosity of hypergiants often lies very close to the Eddington limit .
A:
As the luminosity of stars increases greatly with mass , the luminosity of hypergiants often lies very close to the Eddington limit , which is the luminosity at which the radiation pressure expanding the star outward equals the force of the star 's gravity collapsing the star inward .