Tom Hanks On Astronauts, IMAX's 'Apollo 13'

Sept. 16 -- As a child, Tom Hanks dreamed of being an astronaut, playing zero-gravity games in his swimming pool. Now, he's playing the role of astronaut once again, in Apollo 13: The IMAX Experience, a mega-screen version of the 1995 hit film that Hanks starred in.

Director Ron Howard's Apollo 13 is being completely repurposed for 70mm IMAX exhibition — the first time such a transition has been done for a live-action 35 mm feature film. Apollo 13: The IMAX Experience opens in theaters on Sept. 20.

The movie starsTom Hanks, Kevin Bacon, Bill Paxton and Ed Harris, and dramatizes the precarious 1971 mission of NASA's Apollo 13 shuttle using a combination of archival footage and special effects. Hanks spoke about his role in an interview with Good Morning America's Entertainment Correspondent Alex Cambert.

Below is transcript of the interview as it aired on Good Morning America.

TOM HANKS: (on his appearance on the large IMAX movie screen): The first thing you think is: is my head really that big? Because it is, it is a huge, huge head.

ALEX CAMBERT: Yeah, cause the screen is …

HANKS: Eight stories …

CAMBERT: … Eight stories high.

HANKS: Essentially, your teeth are the size of cars (laughs). You know, they're huge. That being said, you forget THAT very, very quickly and you get into just whatever emotional story that the movie is able to tell.

(movie clip: Apollo13: The IMAX Experience, sound "Houston, we have a problem")

HANKS: It's a very emotional experience that you have — watching this, this regular, like, story-telling movie up on IMAX. It's just different.

CAMBERT: Did you snag any souvenirs from the movie? I mean, did you keep, like, a space suit? Or, what do you have? Come on! 'Fess up! What'd you take?!

HANKS: Well, I still have the pressure suit. I still have the