red giant stars are greater in volume than main sequence stars
topic'stars has not red_giant giant_star is star. red_giant is star. giant_star is not star. massive_stars is short_lived_and_die_violently. massive_stars is not short_lived_and_die_violently. the is billions_of_stars_in_sky. blue_hook_star is not blue_giant_star. topic'stars has red_giant red_giant is not star.