Marc Pinsonneault, Ph.D., professor in the department of astronomy at The Ohio State University, presents “Double Trouble: Interacting Binary Stars.” His online discussion is part of the New Vistas lecture series offered by Ohio Wesleyan’s Perkins Observatory. Tickets are $5 and may be reserved by calling (740) 363-1257. New Vistas series subscriptions, including archive access, also are available. Learn more at