Provider: Eastern (ET) Change
After his barber is hospitalized, Sheldon undergoes a hair-raising change in lifestyle as his carefully planned daily routines are thrown for a loop. Meanwhile, Howard is up in the air about continuing his astronaut training.
The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding. NASA astronaut Mike Massimino has a cameo as himself.
Season 6 blasts off with Wolowitz in space, and despite that, he still has to intervene in an earthbound argument between his mother and Bernadette. Meanwhile, all Raj's friends are on dates, leaving him to ponder a solution to his loneliness.