And that crater in the middle north west, the one that's out there all by itself like a starburst... that one's called Copernicus.

7 seconds sound clip from the Back to the Future Part III movie soundboard.

You can hear this line at 01:03:11.380 in the DVD version of the movie.

Quote context

[...]

- Martin used to let men provoke him into fighting. He was concerned that people would think him a coward if he refused.

- That's how he got a Bowie knife shoved through his belly in a saloon in Virginia City.

- Never considered the future, poor Martin. God rest his soul.

- Sure, and I hope you're considering the future, Mr. Eastwood.

- I think about it all the time.

- And that crater in the middle north west, the one that's out there all by itself like a starburst... that one's called Copernicus.

- Listen to me. I feel like I'm teaching school.

- Please, continue the lesson. I never found lunar geography so fascinating. You're quite knowledgeable.

- When I was 11, I had diphtheria. I was quarantined for three months. So my father brought this telescope, and he put it next to my bed, so I could see everything out the window.

- Emmett, do you think we'll ever be able to travel to the moon the way we travel across the country on trains?

- Definitely. Although not for 84 years and not on trains.

[...]