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.
yes, yes you can
You do not get or use a bucket on Astro Knights Island.
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.
You can play the three planets (jungle, ice , and fire) an any order. The Jungle Planet is the easiest, followed by Ice, then Fire. You must beat all three to complete the island.
There is no treasure chest on Astro Knights Island.
When you defeat all the planets in astro knights island you go to the coordinates X-12, Y-83 ten there should be a giant asteroid retrieve the key from that planet and a portal will appear go in the portal and you will see the "princess" but it's a trick it's really Mordred. HOPE THAT ANSWERS YOUR QUESTION
The object of Astro Knights is to get into space using the crashed saucer Excalibur. Once there, you travel to three planets inhabited by robot creatures and defeat them. Then you can travel to the lair of the villain to rescue the Princess. (for a complete solution, see the related question)
The planetarium is in the village. The planets in the telescope are not important except as background to the story.
There are no bird eggs in astro knights island.
its on the island
It doesn't matter which order as long as you complete all three planets (jungle, fire, and ice). Fire is the hardest of the three.
How do you talk to the girl in the hay loft at astro knights island?