Maybe we're not the first ship to reach Mars from earth.

5 seconds sound clip from the X Minus 1 - Mars is Heaven by Ray Bradbury classic radio dramaseries.

You can hear this line at 00:11:41 in the radio play.

Quote context

[...]

- Is it logical that they should develop in Mars?

- How about that porch swing, and that piano, and Beautiful Ohio.

- Why, it's impossible.

- This looks like the town I was born in.

- Well, it, it looks like my hometown too.

- I thought of something, sir! It's the only solution.

- Maybe we're not the first ship to reach Mars from earth.

- Don't be ridiculous, Lustig.

- Well how else can you explain it?

- Suppose some scientists got together, they, they invented some spaceship and planted a colony here. That's the only answer.

- That's impossible. Men's space travel, it couldn't be secret. Do you have any idea what ships cost? What industrialized power's needed?

[...]