One of the robot attackers is in the castle dungeon. The alien ships attack you in outer space when you are near the Fire Planet and the Jungle Planet. Dodge their shots and shoot back, and land as soon as you can.
You grab it on the floor once you land in Jungle Planet.
The list given to you by the Queen shows it at X-83 Y-20, up and right from the planet Poptropica. To land, click on the planet.
From the Pewter Moon (X-56 Y-52) , travel up and right to reach the fire planet at X-83 Y-20. When you are near the planet, click on it to land. (see related question)
When you are in the spaceship (solar system) view, click on the moon or planet you want to land on. To leave again, use the "launch" lever.
The first time, you have no choice. Fix the saucer and launch it (see the related question). Once you have a spaceship, you can land on Poptropica, the Pewter Moon, or any planet by clicking on it. (The exception is the ice planet, see related question)
Who is they and what planet? If Cosmo is "they" she lands on mobius (sonic's world) in ep 53 I believe. If you mean sonic landing on earth then that is episode 1. Other than that in the 3rd series they land on a lot of different planets.
Dodge their shots and fire back : three shots should knock any of them out. But you don't have to fight them, just get to a planet and land.
The alien land bill was a law passed in 1913 that prevented Japanese people from owning land in California
The title of the book is "Exiles of ColSec, and it's by Douglas Hill.
To jump across the eggs, just jump when the egg is OPEN, so that when you land, it is closed. (see related question)
It is on tp of the castle roof in astro knight island