Jim Parsons, Kunal Nayyar, Johnny Galecki, Simon Helberg Photo

From: Photo Flash: THE BIG BANG THEORY Gets Trekkie on Tomorrow's All-New Episode

On this week's episode of CBS's THE BIG BANG THEORY, Leonard (Johnny Galecki), Sheldon (Jim Parsons), Howard (Simon Helberg), and Raj (Kunal Nayyar) head out to a comic-book convention in Bakersfield, CA dressed as their favorite characters from Star Trek: The Next Generation. The episode entitled 'The Bakersfield Expedition' airs Thursday, Jan. 10 (8:00 - 8:31 PM, ET/PT) on the CBS Television Network. Check out a first look below!