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Rating (5,095)
The Change Constant: Directed by Mark Cendrowski. With Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg. Sheldon and Amy await big news.
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May 17, 2019 · In the episode, Sheldon plans a listening party for the Nobel Prize ceremony on the radio, and is crushed that none of his schoolmates show up ...
May 20, 2019 · Kripke and Bert get their victory laps, Leonard reveals that he's been chilly for twelve years because he still hasn't dared change the ...
"The Change Constant" is the twenty-third episode of the twelfth season of the American sitcom The Big Bang Theory series. This is the 278th episode total ...

The Change Constant

The Big Bang Theory: Season 12, Episode 23
Sheldon and Amy are waiting on some big news; Penny and Leonard try to keep a secret; Bernadette and Wolowitz leave their children for the first time.
Air date: May 16, 2019
Director: Mark Cendrowski
Astronomically popular US sitcom. Nerdy flatmates Leonard and Sheldon know a lot about physics, but little about women. But when Penny moves in across the hall, ...
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19 m. TV-PG; CBS; May 16, 2019; 19 m. The Big Bang Theory. S12 • Episode 23. The Change Constant. Air Date: May 16, 2019. User Score Available after 4 ratings.
The episode opens with a short montage of clips from the series' twelve seasons, then segues to Sheldon and Amy, who are up late waiting for a call from the ...