The free talk begins at 7 p.m. and will be accompanied by a visual tour and is part of a family-friendly 2013 National Astronomy Day celebration at the University of Louisville’s Gheens Science Hall and Rauch Planetarium. Tretter is the planetarium’s director.

Guests who stay for the 8 p.m. Skies Over Louisville show in the dome and star gazing at 9 p.m. in the courtyard, weather permitting, will pay $5 (free for planetarium members).

Attendees will be entered into a drawing to win a Celestron telescope, valued at $149, to be given away the following week. Other prizes will be given away during the celebration.

Cindy Hess
Cindy Hess has more than 30 years of experience in communications, marketing and investor relations, including more than a decade at UofL. She is "sort of" retired but happy to come back to the Office of Communications and Marketing to help with special projects and assignments.