To some people, stars are just lights in the sky. To others, they form wonderful shapes, images, and even constellations and calendars. University of Colorado Astronomy professor Catharine Garmany, who will be presenting the Fiske PlanetariumÂ’s live astronomy show "Constellations and Calendars" on Oct. 1 and Oct. 5 at 7:30 p.m., falls into the latter category. "People just want to understand the sky," Garmany said. "And as an astronomer, I want to help them see whatÂ’s up there."