The Big Bang Theory The Expedition Approximation (Season 8, Episode 6)
TV-14
TV Episode | 21 min | Comedy, Romance

Primary photo for The Expedition Approximation

The Big Bang Theory

The Expedition Approximation (Season 8, Episode 6)

TV-14

TV Episode | 21 min | Comedy, Romance

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. Meanwhile, Leonard and Penny seek advice from Howard and Bernadette when they argue about money.

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Cast	+ Add Cast
7 cast members

Name	Known for
Johnny Galecki Leonard Hofstadter Leonard Hofstadter See fewer	The Big Bang Theory (2007)
Jim Parsons Sheldon Cooper Sheldon Cooper See fewer	The Big Bang Theory (2007)
Kaley Cuoco Penny (as Kaley Cuoco-Sweeting) Penny (as Kaley Cuoco-Sweeting) See fewer	The Big Bang Theory (2007)
Simon Helberg Howard Wolowitz Howard Wolowitz See fewer	Florence Foster Jenkins (2016)
Kunal Nayyar Raj Koothrappali Raj Koothrappali See fewer	The Big Bang Theory (2007)
Mayim Bialik Amy Farrah Fowler Amy Farrah Fowler See fewer	Beaches (1988)
Melissa Rauch Bernadette Rostenkowski Bernadette Rostenkowski See fewer	The Big Bang Theory (2007)