The Big Bang Theory The Colonization Application (Season 8, Episode 17)
TV-PG
TV Episode | 20 min | Comedy, Romance

Primary photo for The Colonization Application

The Big Bang Theory

The Colonization Application (Season 8, Episode 17)

TV-PG

TV Episode | 20 min | Comedy, Romance

A trip to the pet store ends in a fight after Amy learns Sheldon has applied for a one-way mission to colonize Mars. Meanwhile, Leonard surprises Penny with a very "adult" purchase, and Raj gets into trouble when he snoops around Emily's apartment.

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Cast	+ Add Cast
8 cast members

Name	Known for
Johnny Galecki Leonard Hofstadter Leonard Hofstadter See fewer	The Big Bang Theory (2007)
Jim Parsons Sheldon Cooper Sheldon Cooper See fewer	The Big Bang Theory (2007)
Kaley Cuoco Penny (as Kaley Cuoco-Sweeting) Penny (as Kaley Cuoco-Sweeting) See fewer	The Big Bang Theory (2007)
Simon Helberg Howard Wolowitz Howard Wolowitz See fewer	Florence Foster Jenkins (2016)
Kunal Nayyar Raj Koothrappali Raj Koothrappali See fewer	The Big Bang Theory (2007)
Mayim Bialik Amy Farrah Fowler Amy Farrah Fowler See fewer	Beaches (1988)
Melissa Rauch Bernadette Rostenkowski Bernadette Rostenkowski See fewer	The Big Bang Theory (2007)
Laura Spencer Emily Sweeney Emily Sweeney See fewer	Character (2012)