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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 Wolowitz and Bernadette after they fight about money. © BIG BANG THEORY and all related characters and elements are trademarks of and © Warner Bros. Entertainment Inc. All Rights Reserved. |
The Expedition Approximation – The Big Bang Theory
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