Run out of fuel by taking too long to hit the Autonav button after you've left the Arcada.
Due to a lack of navigation, you have exhausted the meager amount of emergency fuel without finding a safe place to land. You are lost in space.
Press the "Don't Touch" button after you've left the Arcada. (PUSH DON'T TOUCH BUTTON)
It said don't touch. I warned you!
Roberta Williams: Ken? Did you hear something?
Ken Williams: It was probably just the gators entertaining another Space Quest player. Go back to sleep, 'berta.
Through a strange quirk of fate (or was it?) you have stumbled into a place beyond time, space, and dimension. You have entered... The Daventry Zone!! That's right, the land of King's Quest. This will not help you now since you are playing Space Quest.