Paul Martini, Ph.D., professor in the department of astronomy at The Ohio State University, presents “Unraveling the Mystery of Comic Acceleration.” His discussion is part of the New Vistas lecture series offered by Ohio Wesleyan’s Perkins Observatory. Tickets are $10 in advance and $12 at the door, and may be reserved by calling (740) 363-1257. The observatory is based at 3199 Columbus Pike (U.S. 23), Delaware. New Vistas series subscriptions, including archive access, also are available. Learn more at owu.edu/perkins.