The Big Bang Theory

Season 8 Episode 17

The Colonization Application

40
Aired Monday 8:00 PM Mar 05, 2015 on CBS
7.5
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129 votes

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Episode Summary

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There's trouble in paradise when Amy discovers Sheldon signed up for a one-way mission to colonize Mars, and the two get into a dogfight at a pet store. Meanwhile, Leonard makes a very "adult" purchase for Penny; and Emily catches Raj snooping in her apartment.

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