none of them are but Pluto used to be the mystery planet and was called plant-X. So there's none right now.
The planet Uranus is called an ice giant planet.
A Planet Called Utopia was created in 1979.
The answer is Uranus
Venus.
There is no planet called the white planet. The closest could be Saturn with it's great white spot.
It is called the mystery planet because it is so far away, and we don't really know anything about it because we are unable to visit it.
The Mystery of the Third Planet was created in 1981.
The duration of The Mystery of the Third Planet is 3000.0 seconds.
planet x is unknown but is farther than Pluto
The cast of Mystery of the Third Planet - 1987 includes: Glenn Stanton as Background
Pluto By Alicia
Pluto By Alicia
There is no planet that is called the "glossy planet".
anything can be in the mystery box. that is why it is called the mystery box
Space Patrol - 1950 The Mystery of Planet X 3-35 was released on: USA: 29 August 1953
Stories from My Childhood - 1998 Alice and the Mystery of the Third Planet 1-3 was released on: USA: 1998
anything can be in the mystery box. that is why it is called the mystery box