Whenever you return to Poptropica planet (Arturus kingdom), your spaceship is parked on the roof of the castle.
I dont think you can.
You can go to space on Astro Knights
The name of the island is "Astro Knights Island". (see the related question)
the jungle planet is in space on astro knights island.
On the top of the castle
Bobby shout da
PLEASE FINISH ASTRO KNIGHTS ISLAND FOR ME username:hyperjellybean (no space! password:loopy
On Astro Knights Island in Poptropica, pretty much like classic knights (armor, cloaks, swords).
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.
You have to beat the other two planets (jungle and ice) before confronting the Binary Bard on his secret asteroid (X-11 Y-82). You will need all three space knights with you.
To return to space on Astro Knights Island after completing the mission there, you can head back to the rocket ship in the observatory and select the option to launch it again. This will take you back to space where you can explore further or complete any remaining tasks.
your spaceship should be on top of the castle..