Defeat the three planets (jungle, ice, and fire) with the help of the Mystical Weapons. When you finish each planet, the knight there will accompany you. When you have all three knights, go to the asteroid belt, at X-11 Y-82, to find the Princess.
on all of the planets you see
really all you have to do is read them they should help a little bit the island
When you have all three knights with you, they suggest you look for a giant asteroid, which happens to be at X-11 Y-82 in the Asteroid Belt.
Once you have beaten all three planets and have all three knights with you, travel to the secret asteroid in the Asteroid Belt (down and left in the solar system). The asteroid is at X-11 Y-84.
For hints only, see the Poptropica blog (related link). To see all questions about Astro Knights Island, type Astro Knights in the ask bar above. For a complete solution, see the related question.
To draw the sword from the crystal stone, you must have defeated all three planets (jungle, ice, and fire) and have all three knights with you. (see the related questions)
The giant asteroid is at X-11 Y-84, but you can only remove the Golden Key when you have beaten all three planets and have all three space knights with you.
all you get is the island medallion and 100 credits
When you have beaten all three planets and have all 3 knights with you, travel to the giant asteroid at X-11 Y-84 in the asteroid belt. There you can pull out the Golden Key and enter the realm of the Binary Bard.
after u go to all three planets u will find binary bard at the end
Because kids were complaining that all the other islands were too easy, so Jeff (creator of poptropica) wanted to make a super hard island and make every other island after astro-knights hard as well. But kids were complaining that every island after Astro-Knights was hard! so they made a game guide for Astro-Knights
As you defeat the three planets (jungle, ice, fire), the knights come along with you. So you have to beat all three planets to get all three knights. When you have them, go to the giant asteroid in the asteroid belt, near X-11 Y-84.
When you have all three knights but can't find the Princess, the knights suggest you look for a fabled "giant asteroid". There is one in the Asteroid Belt near X-11, Y-82.