The damaged saucer Excalibur has crashed in the mud swamp to the right of the Mill. You can reach it with the hovercraft (hover board) in the attic of the mill.
(see related questions)
Your ship never gets lost.
its on top of the castle
Terd on the toilate
Bobby shout da
u just press on it
This means you have already completed the Arturus part of Astro Knights Island. Your spaceship should be parked on top of the castle if you return to the planet.
You need to get a replacement for the broken Fuel Rod and the coordinates you will need to enter in the flight controls. (see the related questions)
get the fuel and put it in the rocket ship and put in 56 and 52.
You can't! They follow you on the ship, but they don't exactly help you at all.
On the Pewter Moon, see the manager at AstroZone about replacing your ship.
x-56 y-52
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!