The Big Bang Theory will come to an end this year of CBS and Channel 4 sister network E4, who will air the finale of the series in late spring 2019. Kaley Cuoco, who plays Penny Hofstadter in The Big Bang Theory, recently revealed details of the upcoming ending in an interview. The Big Bang Theory fans should get ready for an emotional ending if Cuoco’s comments are to be believed. Related articles The Big Bang Theory season 12, episode 11 return date The Big Bang Theory season 12, episode 14 release date In an interview with USA Today, Cuoco, who has played Penny since 2007, said: “I am, like, already losing it.” She added: “These last few episodes have been really heartbreaking." Cuoco’s comments could mean a number of things for the ending of The Big Bang Theory. Either the ending itself is emotional, or Cuoco felt emotional filming it after over a decade working on the show. WHO IS IN THE CAST OF THE BIG BANG THEORY? Kaley Cuoco has spoken about the heartbreaking ending of The Big Bang Theory (Image: CBS) In a cast interview with Ellen DeGeneres earlier this month, the rest of the main Big Bang Theory actors revealed that emotions have been high on set. All the main Big Bang Theory cast were there and admitted to crying on set, with the exception of Jim Parsons. Parsons said: “I haven't cried yet. I have a very deep fear – seriously – that the most unexpected thing is going to happen. He also said how he was “going to absolutely lose my s***” at some point" of filming the ending. HOW MANY EPISODES ARE IN THE BIG BANG THEORY SEASON 12? Related articles The Big Bang Theory season 12: Is this the final series? The Big Bang Theory season 11 recap: What happened in the last series? The Big Bang Theory will be ending with a two-part finale (Image: CBS) Tellingly, the cast called Cuoco the most emotional of the main cast. Although the cast remained tight-lipped about what will happen in the Big Bang Theory finale, fans have been making predictions. One of the most likely finale events comes courtesy of TV Line. They wrote: “Should Big Bang follow in Friends‘ footsteps and conclude with Leonard (Johnny Galecki) and Penny moving out, the series finale should show them walking down the stairs as the new tenants of Apt. 4A exit the freshly-restored elevator.” When USA Today visited the set, however, they called the famous Big Bang Theory elevator “forever-broken”, which suggests it hasn’t been fixed just yet. WHERE IS BIG BANG THEORY FILMED? Will The Big Bang Theory finale finally see the elevator get fixed? (Image: CBS) TV Line also revealed that the Big Bang Theory finale will be in two parts, which will air on the same night. Creator Chuck Lorre said: “It will be an hour — two episodes that will connect. “It will be two separate episodes that will have a throughline.” Big Bang Theory fans, however, will have to wait to find out what will happen in the two-part ending. The Big Bang Theory airs Thursdays on CBSAll rights reserved for this news site express.co.uk and under his responsibility