Ok you first go to the guy that stinks in other words the guy with the manure click on him and he will give you a bag of manure and that's how you get the fuel! ( if you don't know what I mean I mean that the ship runs on manure )
get the fuel and put it in the rocket ship and put in 56 and 52.
you get the fuel rod and enter the coordinates then you go to astrozone and ask the alien to use a ship
I forgot
Space Port: Go to the Space Port on Astro-Knights Island. You'll find a rocket ship there. Green Fuel: Enter the rocket ship and find the controls. You'll see that the rocket is missing fuel. You need to find green fuel. Docks of Arturus: Go to the Docks of Arturus, which is one of the locations on the island.
go to the mill and get the ship
You go to the moon get a rocket ship and then use your rocket ship to fly around the galaxy going to panets. you just roam the galaxy.
If you mean for the original ship powered by the fuel rod, you never need to replace it. You will crash on the moon and you will make a new rocket for your travels. And if you run out of shields with the rocket, you will automatically be teleported to the moon and the shields will be replenished.
you have to get fule for the rocket and put in 56 and 65
to get the gold coin on astro knights you go on to the rocket ship fountin. at some point you will see a shimer. and that's were the gold coin is. hope that helps!
The only rocket ship in Arturus is the crashed saucer Excalibur, in the mud swamp to the right of the Mill. You have to find a replacement fuel rod for the saucer, which can get you into space. The robot invader who is locked in the dungeon is powered by the same kind of rod. (see related question)
The rocket is on top of the castle of Arturus.
The new rod that is not broken will be at the bottom. Click and drag the new fuel rod on top of the of fuel rod.