Willingness to begin the work
Logos
there is no planet which has finished....I think
perhaps Neptune
Perhaps you mean "exoplanet"? That refers to any planet outside our Solar Systems.
Perhaps the planet "Terra" otherwise known as "Earth".
"Earth" or perhaps the planet "Terra".
A moon, or perhaps many moons.
moon green planet red planet ice planet astroid planet I know that because i finished all the worlds from lunar colany to early poptropica what do you think of that!>:)
Planet or globe; particular part of Earth.
Pluto finished its position as the ninth planet in our solar system in 2006 when the International Astronomical Union (IAU) redefined the definition of a planet. Under the new definition, Pluto did not meet all the criteria required to be classified as a planet, and it was reclassified as a dwarf planet. This decision was made due to the discovery of other similar-sized objects in the Kuiper Belt, a region of the solar system beyond Neptune.
Perhaps this question is about "rings"? Saturn is known as the ringed planet, but Jupiter, Uranus and Neptune all have smaller rings.
Well, Pluto was the planet which is made of a lot of ice (perhaps about half of the planet's mass), but in 2006 the IAU redefined Pluto as only a Dwarf Planet. The Pluto average temperature is about -229 degrees Celsius.
All except Neptune for people who grow to 84 or more.