  Rigel is a bright nearby B8 Ia supergiant star. We observed Rigel for 27.7
days with the MOST satellite and monitored it's optical spectrum for over 6
years. Radial velocity (RV hereafter) curve manifestly calls for tens of modes
for prewhitening. We conservatively report on the first 19 significant modes to
avoid misdetection of aliases. The variability periods range from about 75 days
down to a day. All radial modes are stable. We speculate the presence of
gravity-dominated mixed-modes excited by \epsilon-mechanism from the Hydrogen
burning shell on top of He burning core.
