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The Commitment DeterminationMay. 07, 2015 
The Maternal CombustionApr. 30, 2015 
The Graduation TransmissionApr. 23, 2015 
The Communication DeteriorationApr. 16, 2015 
The Fortification ImplementationApr. 09, 2015 
The Skywalker IncursionApr. 02, 2015 
The Leftover ThermalizationMar. 12, 2015 
The Colonization ApplicationMar. 05, 2015 
The Intimacy AccelerationFeb. 26, 2015 
The Comic Book Store RegenerationFeb. 19, 2015 
The Troll ManifestationFeb. 05, 2015 
The Anxiety OptimizationJan. 29, 2015 
The Space Probe DisintegrationJan. 08, 2015 
The Clean Room InfiltrationDec. 11, 2014 
The Champagne ReflectionNov. 20, 2014 
The Septum DeviationNov. 13, 2014 
The Prom EquivalencyNov. 06, 2014 
The Misinterpretation AgitationOct. 30, 2014 
The Expedition ApproximationOct. 20, 2014 
The Focus AttenuationOct. 13, 2014 
The Hook-Up ReverberationOct. 06, 2014 
The First Pitch InsufficiencySep. 29, 2014 
The Junior Professor SolutionSep. 22, 2014 
The Locomotion InterruptionSep. 22, 2014 
Sheldon and Raj test whether they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a steam tunnel deep underground. Meanwhile, Leonard and Penny seek advice from Howard and Bernadette after they fight about money.
Episode Title:The Expedition Approximation
Creator:Bill Prady, Chuck Lorre
Stars:Jim Parsons, Johnny Galecki, Kaley Cuoco, Kunal Nayyar, Mayim Bialik, Melissa Rauch, Simon Helberg
Networks:CBS
