You are pretty sure that you were not a rocket scientist before you lost your memory, but luckily, a rocket scientist was not needed to repair the ship -- just an extra pair of hands to hold stuff. You discover that the rabbit's name is Captain Bucky, and that he is a space pirate that crash landed onto this planet after a space brawl over a large piece of red stone.
Once all the repairs are finished, Captain Bucky offers to have you join him on his pirating adventures. Being a pirate himself, Percy immediately says "Yes!" and before you know it, you are both whisked away into a life of intrigue, thieving, and scoundrelling, never to see the Earth again.
You live happily ever after.