answersLogoWhite

0

No. Pluto was reclassified as a "dwarf planet" because it's a tiny ball of ice and rock significantly smaller than the Moon, gravitationally bound to Neptune, and it really makes no sense to lump it in with bodies like Jupiter and Saturn.

It's really a historical accident that Pluto was ever considered a planet in the first place. People were looking for a planet to explain certain things about Neptune's orbit... it didn't seem to be moving quite right, but a planet outside Neptune's orbit about the mass of Earth would have made the calculations come out right. By sheer luck (good or bad, depending on your opinion), Pluto happened to be about where people were looking for this "Planet X".

The more we found out about Pluto, the more it didn't seem to fit the equations. Measurements of its size and mass kept coming up short, and estimations changed from "about the size of Earth" to "about the size of Mars" to "about the size of Mercury" to "maybe around the size of the Moon" to "dang, this thing is tiny."

Meanwhile, more careful measurements of Neptune's orbit showed that it didn't need any extra mass out there after all, it was orbiting precisely as predicted by theory.

User Avatar

Wiki User

13y ago

What else can I help you with?

Related Questions

Which planet do scientist do not consider a planet?

Pluto. It is now considered a "Dwarf Planet", due to its tiny size and the fact that there are other bodies like Pluto in the outer Solar System.


How did a scientist prove that Pluto is not a planet?

Pluto became a dwarf planet because of its small size.


When was Pluto considered a major planet?

Pluto was considered a major planet from 1930 to 2006.


Is Pluto the fifth planet?

No. The fifth planet is Jupiter. Pluto was once considered the ninth planet, but is no longer considered a planet.


What planet are scientist saying is not a planet?

Pluto is the planet that scientist are saying is not a planet. Scientists are not saying any particular planet is not a planet. Simply that Pluto has been reclassified as a dwarf planet.


How many planets were left in your solar system when Pluto was considered an planet?

There were a total of nine planets in the solar system when Pluto was considered a planet.


Why is Pluto regarded as a dwarf planet?

Pluto is no longer considered a planet.


Which planet is nearer Pluto?

Neptune is now considered the outermost planet, Pluto is the next one but it is no longer considered a planet.


What year did scientist consider Pluto not a planet?

2006


Is Pluto considered a gas planet?

No, Pluto is a tiny, rocky dwarf planet.


How many planets rotate the sun?

There are eight known planets. Pluto was once considered a planet, but it is no longer officially considered a planet.There are eight known planets. Pluto was once considered a planet, but it is no longer officially considered a planet.There are eight known planets. Pluto was once considered a planet, but it is no longer officially considered a planet.There are eight known planets. Pluto was once considered a planet, but it is no longer officially considered a planet.


Which planet is not always considered a planet?

pluto.