Raj worries a probe he designed will not work in outer space. When Penny and Amy coerce Leonard and Sheldon into going shopping, the guys contemplate their relationships with their respective girlfriends.

Directed by: Mark Cendrowski - Chuck Lorre - Bill Prady - Steven Molaro

Writer credits: Chuck Lorre - Bill Prady

Cast: Johnny Galecki - Jim Parsons - Kaley Cuoco-Sweeting - Simon Helberg - Kunal Nayyar

AKA: The Big Bang Theory, The Celebration Reverberation, Теорiя великого вибуху, Agymenők, TBBT, Teorie velkého třesku

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