Guest Star: Dr. Neil deGrasse Tyson

You are viewing a list of Dr. Neil deGrasse Tyson's 1 appearance on The Big Bang Theory.

  • The Apology Insufficiency

    Season 4, Episode 7 - The Apology Insufficiency
    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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