The myths, astronomical phenomena and constellations of the sky in the Southern Hemisphere will be explored in a live astronomy show at the University of Colorado at Boulder's Fiske Planetarium on Friday, April 20, and Tuesday, April 24, at 7:30 p.m. Deidre Brucker, a CU-Boulder senior majoring in computer science, and Sanlyn Buxner, a recent CU graduate who now works at Fiske Planetarium, will present "Southern Skies."