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The Big Bang Theory Season 8 Episode 17

Trouble arises when Amy learns Sheldon has applied for a one-way mission to colonize Mars. Also, a trip to the pet store ends in a fight for Sheldon and Amy, Leonard surprises Penny with a very “adult” purchase, and Raj is caught snooping in Emily’s apartment.

Episode Title: The Colonization Application

Air Date: 2015-03-05

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