If you get stranded, without enough fuel to return to the wormhole, you can call for help and be charged a significant score penalty... or, you can simply quit the game, and get on the high scores list with a nice high score for free!
There should be a score penalty for quitting the game early that's at least as big as the penalty for getting stranded. Or perhaps the player could be told their score when they quit, but shouldn't have that score put on the high scores list. What do you think?
(I haven't tested it further, but quitting the game might also save the player from other bad-for-your-score situations, like facing certain death in a battle.)