Well, there's one way to find out. I'm going out there.
4 seconds sound clip from the The Angry Red Planet movie soundboard.
You can hear this line at 00:30:19 in the Blu-ray version of the movie.
Quote context
[...]
- You know, the atmosphere is very rare. It wouldn't conduct sound too well.
- Of course. That might also explain why the plants don't move. No breeze.
- I wonder... Could it be... intentional?
- I know it sounds unreasonable, but it just doesn't seem natural.
- You mean, you think it's controlled?
- What beings could possibly exercise such fantastic control?
- Well, there's one way to find out. I'm going out there.
- You know something, Professor? First time in my life I've ever really been scared.
- There's nothin' out there except a bunch of crazy plants.
[...]