One of the most violent phenomena in astronomy -- supernovae -- will be the topic of a live astronomy show at Fiske Planetarium, Friday, Dec. 3, and Tuesday, Dec. 7, at 7:30 p.m. University of Colorado at ºù«ÍÞÊÓƵ astronomy Professor Richard McCray will delve into supernovae, looking at everything from ancient Chinese inscriptions to current observations of these rare stars and how new observations are used to measure the expansion of the universe.