star search only had one launch
25 m depending on composition do become red giants as their core hydrogen is depleted and they begin to burn helium in core in a helium flash they develop a degenerate carbonoxygen core later on the asymptotic giant branch they finally blow off their outer shell as a planetary nebula and leave behind their core in the form of a white dwarf
early astronomers recognized a difference between fixed stars whose position on the celestial sphere does not change and wandering stars planets which move noticeably relative to the fixed stars over days or weeks