The Big Bang Theory The Planetarium Collision (Season 12, Episode 5)
TV-PG
TV Episode | 19 min | Comedy, Romance

Primary photo for The Planetarium Collision

The Big Bang Theory

The Planetarium Collision (Season 12, Episode 5)

TV-PG

TV Episode | 19 min | Comedy, Romance

Amy doesn't have time to work with Sheldon on super asymmetry, so he goes to great lengths to ensure she's available. Koothrappali doesn't want Wolowitz to join him in hosting a show at the planetarium.

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Cast	+ Add Cast
13 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 Hofstadter Penny Hofstadter 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)
Bob Newhart Arthur Jeffries Arthur Jeffries See fewer	Elf (2003)
Joshua Malina President Siebert President Siebert See fewer	A Few Good Men (1992)
Eddie Shin Dr. Park Dr. Park See fewer	Alexa & Katie (2018)
Alison Martin Andrea Andrea See fewer	Blades of Glory (2007)
Hermie Castillo Colin Colin See fewer	The Big Bang Theory (2007)
Jared Broxterman Male Planetarium Goer (uncredited) Male Planetarium Goer (uncredited) See fewer	Hawaii Five-0 (2010)