AT 7:05 p.m. Tuesday, Oct. 18, teens are invited to NIU’s La Tourette Hall conference room to a free discussion on “Orbiter,” physics, space and the history of America’s shuttle program with Suzanne Willis and Matthew Wiesner from NIU’s Department of Physics. The STEMfest SF Teen Read is presented by NIU STEM Outreach in conjunction with Founders Memorial Library and librarians who specialize in teen fiction at the DeKalb Public Library, Sycamore Public Library, Cortland Community Library and other libraries throughout DeKalb County. The SF Teen read culminates Saturday, Oct. 22, at STEMfest at the NIU Convocation Center with activities for science fiction lovers of all ages. Live Skype appearance…