why is pluto out of the solar system? do u think its fair on its part??

Question

plzz comment

Answer 1

Pluto is where it always was. And astronomers are not angry with Pluto. They've simply realized their classification system is not adequate to describe the discoveries we are making in the outer solar system. It used to just be stars, planets, moons, comets and asteroids, but objects that lie in between the definitions were troubling. Was Pluto a true "planet" or just a very large asteroid? If it is an escaped moon, could we still call it a moon or does its odd orbit make it a planet? And how do we deal with all these other planetary bodies we've been discovering, Eris/Xena, Quaoar and the like? We don't know much about them but we know the solar system is very different out there. The sun starts looking like just a bright star, there are a lot of ice bodies and other unknowns out there. We may have to invent some new words to describe what we find in the near future.

It's just rearranging scientific concepts to fit the universe as we find it. Nothing else has changed.

Answer 2

Pluto is not out of the solar system. It still is part of the solar system. Pluto was never a planet. It is too small, has a very elliptical orbit outside of the plane of the solar system, and many objects beyond Pluto's orbit have been found that are bigger than it. It is not a planet and officially no longer calling it a planet is a great thing.

Answer 3

1. It's in the Solar System, just not a planet anymore because it doesn't fit the defintion that a planet must clear out everything near it
2. Fair on its part? Do you think Pluto cares what we designated it?
3. People here need to accept change. If they don't, we might as well be living in the Dark Ages again.

Answer 4

The International Astronomical Union decided that Pluto was no longer a planet. The reason is that while Pluto is round, orbits the sun, and has three moons, it has not cleared (via gravity) its own orbit of debris. Instead, they decided to classify it as a "dwarf planet".

See the details below.

RESOLUTION 5A
The IAU therefore resolves that "planets" and other bodies in our Solar System, except satellites, be defined into three distinct categories in the following way:

(1) A "planet" [footnote 1] is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.

(2) A "dwarf planet" is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape [footnote 2] , (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.

(3) All other objects [footnote 3] except satellites orbiting the Sun shall be referred to collectively as "Small Solar-System Bodies".


Footnote 1: The eight "planets" are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Footnote 2: An IAU process will be established to assign borderline objects into either dwarf planet and other categories.

Footnote 3: These currently include most of the Solar System asteroids, most Trans-Neptunian Objects (TNOs), comets, and other small bodies.

RESOLUTION 6A
The IAU further resolves:

Pluto is a "dwarf planet" by the above definition and is recognized as the prototype of a new category of trans-Neptunian objects.

Answer 5

I do feel kinda bad for Pluto, but scientists now have three qualifications for a planet. Can't remeber the first two, but the third is that it has to have a clear space in the area around it, and there are actually a bunch of objects neart pluto called the Kuiper Belt. Poor Pluto couldn't make it.

Answer 6

Pluto is not out of the solar system, it is where it has always been.
It has been de-classified. It is no longer considered a planet.

Answer 7

up until recently the definitions of what was considered a planet was vague at best and with new discoveries of masses of rock bigger than pluto a line had to be drawn. lots of astronomers and and scientists gathered to discuss whether they should admit three new planets or just take one out. in the end they chose to take one out. personally i think they should have just added the new discoveries.

Answer 8

Totally not fair, they were just late paying their rent this month.

Answer 9

Fair doesn't enter into it in anyway whatsoever.