Park Ranger Austin Tumas will present on "The Heart of Stars" at 7 p.m. Tuesday, at the July 16 meeting of the Black Canyon Astronomical Society (BCAS) in the Lion's Clubhouse, 602 North Nevada Ave., Montrose. An astronomy interpreter at Black Canyon of the Gunnison National Park, Tumas will explain how constellations unify us and asterisms celebrate our diversity. They connect us to the night sky and each other. Explore the history and cultural diversity of shapes in the night sky. 

The BCAS stimulates public interest in and knowledge of astronomy in Delta, Montrose and Ouray counties. Monthly meetings are held in Montrose or Delta. The BCAS also holds public sky viewing events. More info at or by calling 856-7716.