The night sky and constellations above Boulder, along with the history of the constellations and the zodiac, will be explored during the second in a series of live astronomy shows at the Fiske Planetarium this winter and spring. Katy Garmany, a University of Colorado at Boulder astronomy professor and director of Fiske Planetarium and Sommers-Bausch Observatory, will present "Ancestral Skies" at Fiske Planetarium on Tuesday, Jan. 25, at 7:30 p.m.