The Instigator
Con (against)
1 Points
The Contender
Pro (for)
0 Points

Pluto is a planet

Do you like this debate?NoYes-1
Add this debate to Google Add this debate to Delicious Add this debate to FaceBook Add this debate to Digg  
Post Voting Period
The voting period for this debate has ended.
after 1 vote the winner is...
Voting Style: Open Point System: 7 Point
Started: 4/1/2016 Category: Science
Updated: 2 years ago Status: Post Voting Period
Viewed: 583 times Debate No: 89077
Debate Rounds (4)
Comments (3)
Votes (1)




Resolved: Pluto is a planet. First round simply accept the challenge.


Pluto is a large object that orbits the sun; a planet. Can you find anything disproving that?
Debate Round No. 1


Your argument is extremely vague. You didn't define large and a lot of things orbit the Sun. Is an asteroid a planet? Is a satellite a planet? Is the ISS a planet? Am I a planet? These all fit your definition. They all are orbiting the sun and they all could, in the right context, be considered large. Here's why Pluto isn't a planet:

There were so many objects orbiting the sun that people thought were planets, such as Ceres, Eris, Makemake and others that in the twenty-sixth general assembly of the International Astronomical Union, a working definition of planet was established. A planet must satisfy these three criteria:

1. It must be in orbit around the sun.

Pluto clearly satisfies this criteria.

2. It must have enough mass to pull itself into a spherical shape.

Pluto is not perfectly spherical, but it's close enough. Pluto satisfies this criteria as well.

3. It needs to have cleared the area around its orbit.

Here's where Pluto's problem arises. When the planets formed, they became the dominate force in their orbit. Any other objects were either pushed out or became part of the planet. For example, Earth is 1.7 billion times the mass of any object in its orbit.

Pluto only accounts for less than 1% of the debris in its orbit. Thus, it fails this criteria, and is considered a dwarf planet.


729AO forfeited this round.
Debate Round No. 2


Logician1234 forfeited this round.


1. Cite your sources.
2. As you said, Earth has other drebis in its orbit, and is slowly accumulating more. Does this mean is not a planet, Or that eventually all the planets will not be considered planets because too much drebis accumulated in its orbit. Or because its orbit moved into the asteroid belt or kuiper belt (or any other area that is more populated with drebis than allowed).
3. So no moons are allowed? Then the only planets are Mercury and Venus!
Debate Round No. 3


I'm sorry, but this is the definition of a planet. Call it whatever you like, but it isn't a planet if it doesn't fit the definition.

Debris surrounding earths orbit is not massive enough to fit into section 3 of the definition.

To clarify, I said the are around its orbit. Moons are considered in the orbit and are not included in the third definition.


729AO forfeited this round.
Debate Round No. 4
3 comments have been posted on this debate. Showing 1 through 3 records.
Posted by Longline 2 years ago
How are we still talking about this in this year? i do not even know what that is.
Posted by Dreogan 2 years ago
So by your definition of "a large object that orbits the sun; a planet", we should have thousands to millions of planets. What constitutes a "large object?" The ISS is a fairly large object in orbit around the Sun, is that a planet?
Posted by TexturedFrog48 2 years ago
Your nebulous definition of the word "planet" is only a subliminal portion of the official term. I know not if informing you of what you omitted is a violation of the rules. But the basis of your argument is based on a false conjecture of the definition of "planet", so I feel obligated. An official definition is existent, which includes having an orbital track that does not meet another planet's. Since Pluto does not meet this circumstance it is not a planet.
1 votes has been placed for this debate.
Vote Placed by SirMaximus 2 years ago
Agreed with before the debate:Vote Checkmark--0 points
Agreed with after the debate:Vote Checkmark--0 points
Who had better conduct:Vote Checkmark--1 point
Had better spelling and grammar:--Vote Checkmark1 point
Made more convincing arguments:--Vote Checkmark3 points
Used the most reliable sources:--Vote Checkmark2 points
Total points awarded:10 
Reasons for voting decision: Pro forfeited 2 rounds, but Con only forfeited 1 round. Therefore, Con wins for conduct.