Matthew McConaughey and MacKenzie Foy Discuss 'Interstellar'

The two actors team up as father and daughter in the new sci-fi blockbuster hit.
3:31 | 11/10/14

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Transcript for Matthew McConaughey and MacKenzie Foy Discuss 'Interstellar'
There's a big weekend at the box office for just the fourth time in history, two fimlms debuted at more than $50 million. One was Disney's and one was "Interstellar." I sat down with Mckenzie foy and Matthew mcconaughey. What's going on, Murph? Why did you and mom name me after something that was bad? We didn't. Murphy's law? It means whatever can happen will happen. That sounded just fine with us. Whoa! And that's when it all begins. I want to ask you, Mckenzie, I'm sure you have heard by now that your role was written originally for a boy and Christopher Nolan decided to change it and turn it into a daughter for cooper. Do you think it would be have been a completely didn't movie? I think it might have had a different effect just because it's about like a father and a daughter and I think a lot of dads and daughters have that special relationship. I have a good relationship with my dad. You channeled your relationship with your dad. Yeah, Mr. Matthew remind mes a lot of my dad. Mr. Matthew. I like how that sounds. Have you seen a script like this before? No, I haven't. I never read the script. I have never seen a movie quite like this. Filming it with the dust storms and those scenes. It was cool. It felt like you were there. One of your first feature film roles was "Twilight." Being part of a film like that, did that prepare you for something like this? It's prepared me for everything else I have done. It's great first movie to put on the resume. It did fairly well. A few people saw it. I'm sure you have shared advice with Mckenzie. But as a young actor -- You can never -- he didn't go, here's some advice. Just by watching you. Watching you act, do your thing, be yourself. I learned to be loose. Not be so stiff. Stand on my mark. Would either one of you take a trip into outer space. Yeah! It would be awesome T. It would be awesome. You wouldn't be scared? I think the fear of not knowing what will happen. But you don't know what will happen on Earth. You always have that 50-50 chance. Good answer. Wow. I'm not saying anything after that. Out of the mouth of a 14-year-old. And speaking of that -- this is airing on Monday, which happens to be -- My birthday. We wanted to say happy birthday. We brought some, look at this -- cup cakes. Do you like cupcakes? Who doesn't like cupcakes? Confetti cupcakes. Can I have one? Cheers. Happy birthday, Mckenzie. And yes, we have cupcakes, too. Coming up, we're getting

This transcript has been automatically generated and may not be 100% accurate.

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