Guest Star: Dr. Neil deGrasse Tyson

You are viewing a list of Dr. Neil deGrasse Tyson's 2 appearances on The Big Bang Theory.

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  The Apology Insufficiency
  Season 4, Episode 7 - Aired November 4, 2010

  Howard is working on a new Department of Defense project and needs top-level security clearance. His friends are interviewed by the F.B.I. and each of them has reason to think their interview might have jeoparized Howard's job prospects.

  Appeared as Himself
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  The Conjugal Configuration
  Season 12, Episode 1 - Aired September 24, 2018

  When Raj finds out he was a TV station's second-choice astrophysicist, he gets into a feud with Dr. Neil deGrasse Tyson.

  Appeared as Himself