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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.
The Big Bang Theory
Season 8
6
October 20, 2014
21 minutes
3.5/5
Mark Cendrowski
Director
Steven Molaro
Story
Tara Hernandez
Story
Jim Reynolds
Teleplay
Peter Chakos
Editor
Steve Holland
Teleplay