The saucer, once repaired, only takes you as far as the Pewter Moon (X 56 Y 52). From there, you build another spaceship to travel to the 3 planets on the Queen's list.
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Your spaceship parks on top of the castle. You can come and go from Main Street.
If you leave the island or log off while in space, or return to Arturus for any reason...Your spaceship parks on top of the castle.
Did you go to the computer and hit launch??
At the end of the island quest, you receive the Island Medallion. At that time, or if you return to the planet Poptropica for any reason, your spaceship is parked on top of the castle.
If you land on earth with your space ship, it will be on top of the castle waiting for you!
When the Excalibur crashes on the Pewter Moon, go to Astro Zone and the manager will arrange for you to have a new ship holographically constructed outside.
In order to go to another island, you have to leave on the blimp parked at the Mordred Museum. When you have a spaceship and go to Arturus, the spaceship parks on top of the castle.
It goes on top of one of the castle ruins on the original island. Don't worry it's not hard to get to!
If you land back on Poptropica, your spaceship is parked atop the castle. This is also its location when you have beaten the island.
go to the castie
go to the moon and there will be a building ask the owner wether you can costumize your space ship good luck