With the saucer Excalibur, you go to the Pewter Moon, and there you make a real spaceship to travel the solar system. (see 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.
Because on Poptropica it showed it as a another different planet on Poptropica like astro-knights island. (not exactly)
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.
At the top of the ice mountain.