Once you have a spaceship from the holopad, use the "launch" command and you will go to space. The X and Y coordinates are shown on the screen, and you need to match those with the coordinates from the list of 3 planets that the Queen gave you. The Pewter Moon is at X-56 Y-52.
The Ice Planet (X-73 Y-83) is down and right from the Pewter Moon.
The Fire Planet (X-83 Y-20) is slightly up and right from the Pewter Moon
The Jungle Planet (X-15 Y-15) is very far to the left and up from the Pewter Moon.
(see the related question)
Astro Knights
The phoenix is on the jungle planet
the jungle planet is in space on astro knights island.
Green.
There are no cubes on Astro Knights island. There are ice floes on the Ice Planet, that you jump across to avoid the robot fish.
The Laser Lance.
No. Although there is a red planet, it is the Fire Planet and is not intended to be Mars.
go to ice or fire planet but fire is the hardest
It is on the Fire Planet. The Fire Planet's coordinates are 83, 20.
You do not get or use a bucket on Astro Knights Island.
This means you have already completed the Arturus part of Astro Knights Island. Your spaceship should be parked on top of the castle if you return to the planet.
At the top of the ice mountain.