The Big Bang Theory › Season 8

S8 E6: The Expedition Approximation

Name: The Expedition Approximation
Released: 2014-10-20

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.

Air date	Oct 20, 2014
Runtime	21 minutes
TMDB rating	★ 7.2/10