On poptropica, when you get to the asteroid belt, if you are looking for Mordreds little castle that holds the key, go to: X 12 and Y 80. There you will find the little asteroid Mordred is hiding on.
go to south part of space then go left and your there!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:)
go into the dungeon
go to the EMO girl in the MILL
go to the middle of the asteroid belt and it's on a asteroid go down to it.
Beat the 3 planets go to the crystal click on the key
go through the asteroidbelt until you find a large asteroid with a giant Crystal on it.
You can't. You have to go to the 2 stacks of hay, get in and push your way into the cave. Check the walkthrough on YouTube
you go past the sun then down until it says Warning: Entering Asteroid Belt.
get the rope, shoot an arrow, find the note, search the bed, get the glow stick, go for a crash landing
you can go on youtube and search up astroknights walkthrough and watch part 2/4 or 3/4 and then you will find your answer.
After you defeat the ice plant you go to the fire plant or jungle plant. But if you were already there you can go to the asteroid belt where there is a castle shaped like an asteroid.
Go to the lower left, towards the asteroid belt, and look for an extra planet.