The public is invited to "Star Trek: A Temporal Event"at Chestnut Hill Library on Wednesday, July 13, 4:30 to 6:30 p.m. The library's own Starfleet officer, Derrek McLean, will discuss the multiverse with a Q & A session. There will be games, prizes, giveaways, a movie, and more. Costumes are welcome. The event will be in the large meeting room at the library, 8711 Germantown Ave. For more information, contact Ms. Claire Hand at email@example.com or stop by the library.