What Is Pluto? Can We Live There?

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Discussion Overview

The discussion centers around the classification and characteristics of Pluto, exploring whether it can be considered a planet and the implications for potential human habitation. Participants also touch on its atmosphere and comparisons with other celestial bodies, including its moon Charon.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants question the classification of Pluto, noting it cannot be easily categorized as a terrestrial or gas giant due to its low density and potential composition of ices.
  • There is a suggestion that Pluto might not be a planet at all, but rather the largest member of the Kuiper belt.
  • Participants discuss the relationship between Pluto and Charon, with some asserting they share an atmosphere, while others challenge this claim and clarify that the atmosphere only exists in a shared state when not frozen.
  • One participant expresses the view that if Pluto were discovered today, it might be classified as a large comet or asteroid rather than a planet.
  • Concerns are raised about the implications of changing Pluto's classification after it has been labeled a planet for many years.

Areas of Agreement / Disagreement

Participants express differing views on Pluto's classification and its characteristics. There is no consensus on whether Pluto should be considered a planet or how its atmosphere interacts with Charon.

Contextual Notes

Some statements rely on interpretations of scientific articles and may contain inaccuracies or misunderstandings regarding Pluto's atmosphere and classification. The discussion reflects ongoing debates in the scientific community about these topics.

FreeWill
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What exactly is Pluto? It says "Pluto is the only known planet which cannot be placed in the terrestrial versus gas-giant planet classification -- it is small, but not very dense." What does that mean? We couldn't live on gas planets because there's no surface there right? But could we live on Pluto? How much do we know about Pluto?
 
Astronomy news on Phys.org
moved :smile:
 
FreeWill said:
What exactly is Pluto? It says "Pluto is the only known planet which cannot be placed in the terrestrial versus gas-giant planet classification -- it is small, but not very dense." What does that mean? We couldn't live on gas planets because there's no surface there right? But could we live on Pluto? How much do we know about Pluto?

What this means is that the terrestrial planets, are small and dense because they are mostly made form rock. The low density of Pluto suggests that it contains little or no rock and just might be composed of various ices. There is some argument that Pluto shouldn't even be considered a planet at all but is just the largest member of the Kuiper belt, which consists of like icey bodies.
 
on wikipedia it says that it and Charon, it's sattalite, share the same atmosphere, and sometimes the atmosphere will freeze and it will form a single icy body
 
It's very evident that Pluto is not akin to any other of the 8 other planets, so I prefer to call it a minor planet

I also think that is probable that in the future some object bigger than Pluto will be found in the Kuiper Belt (Sedna and Quaoar have been close to the mark)
 
hexhunter said:
...and sometimes the atmosphere will freeze and it will form a single icy body

Er..What? No, this isn't correct. I think you must have read it wrong
 
Hexhunter said:
on wikipedia it says that it and Charon, it's sattalite, share the same atmosphere, and sometimes the atmosphere will freeze and it will form a single icy body.
Adrian Baker said:
Er..What? No, this isn't correct. I think you must have read it wrong
I got to say, that's the weirdest thing I've ever heard.

BRB

OK, it does say this:
"It is thought by some that Pluto shares its atmosphere with its moon."
but nothing about a single solid body. Maybe he was misunderstanding this:
"Pluto and Charon are also unusual among planets in that they are tidally locked to each other."
 
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Well, the article also says (correctly) that the atmosphere freezes regularly.

What it fails to clarify is that if Pluto and Charon do share an atmosphere, then it would only be shared when the atmosphere is not frozen.
 
  • #10
How much do we know about Pluto?

an introduction...
http://www.seds.org/billa/tnp/pluto.html

it should have gone to the general astrology

that was a typo right? :cry:

What it fails to clarify is that if Pluto and Charon do share an atmosphere, then it would only be shared when the atmosphere is not frozen.

Thanks for clarifying that Pete!
When Pluto's atmosphere freezes, it falls to the ground as a kind of snow (not water-snow, of course).
 
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  • #11
Phobos said:
an introduction...
http://www.seds.org/billa/tnp/pluto.html

I think that article pretty much sums up my feelings about Pluto. If it were only discovered today, I think we'd classify it as a large comet/asteroid (as Sedna probably will be), but since it's been officially labeled a planet for the last 75 years, why bother changing it now. It would just create too much confusion. Although, I have to admit it *would* be fun to watch the numerologists and astrologers squirm. :devil:
 
Last edited by a moderator:

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