TO get into the asteroid castle you have to complete the puzzle on the door.
it is x:21 y:81 -yepp
you have to have all three knights.to get the knights beat all the bad guys.there are three.
the coordinates are X-11 Y-83. then you jump up the fortress and click on the key which opens the door to the other galaxy.
you can not get the cat away from the door on poptropica you have to jump over it
you have to jump
you can find it in early poptropica
you open the door of the ship in poptrpoica
just click randomly
figur the thing out
it is in the libary in the casthe
you have to play
bye the door