  Rigel (beta Ori, B8 Ia) is a nearby blue supergiant displaying alpha Cyg type
variability, and is one of the nearest type-II supernova progenitors. As such
it is an excellent test bed to study the internal structure of pre
core-collapse stars. In this study, for the first time, we present 28 days of
high precision MOST photometry and over 6 years of spectroscopic monitoring. We
report nineteen significant pulsation modes of SNR>4.6 from radial velocities,
with variability time scales ranging from 1.21 to 74.7 days, which are
associated with high order low degree gravity modes. While the radial velocity
variations show a degree of correlation with the flux changes, there is no
clear interplay between the equivalent widths of different metallic and Halpha
lines.
