Once you have replaced the broken green Fuel Rod, you can enter the coordinates into the dials on the Excalibur. The only ones that are close enough are X-56 Y-52.
(see related questions)
Once you have built a new spaceship on Astro Knights Island, it will park on top of the castle whenever you leave the island.
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It is on tp of the castle roof in astro knight island
There is nowhere to enter a password. Fix the saucer and get the coordinates you need to fly it. (see related questions)
You have to get the fuel rod
you get the green stuff an dthen put it in
you put it into the spaceship ontop of the mill
Yes, anytime you are back on the Pewter Moon.
You can't get to Jungle planet without a spaceship. You can make a spaceship at the moon.
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.
The spaceship in Astro knight is located in the mud next to the windmill
There is no way to reset an island. On Astro Knights, if you leave the island from space, the spaceship parks on top of the castle in Arturus. To replay the island, you would have to create a second username. You can have as many as you want, saved or unsaved.