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 Posted: Fri Jan 16, 2009 9:11 pm
o.o
So I heard from people that it was a planet, but they changed it, and they changed it again so its a planet.
Now Im confused. >_>
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Posted: Mon Jan 19, 2009 11:13 am
okay, stick with me here,
Pluto is NOT a planet, its been re-classified to a Dwarf Planet. this is because a planet needs to fill some certain properties to be a planet. It needs to orbit a star, gravity has to compress it into a sphere, and it has to clear all matter around its orbit. but Pluto doesnt clear all of the matter around its orbit because its actually part of the Keiger (sp?) Belt, which has other matter flying around in it
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Posted: Sat Apr 11, 2009 9:35 am
Partially right, it doesn't need to clear its orbit of all debris, its just needs to be the gravitationally dominant body. In the case of Pluto, it clearly isn't seeing as it's in a 2:3 resonance with Neptune AND has a co-orbiting body (Charon) with a large fraction of it's mass (Charon is about half Pluto's diameter). If you read the Wikipedia article, it has a lot of great information as well. But, to the point, Pluto is very much not a planet. However, it is still large enough to be noteworthy, hence why it was classified as Dwarf Planet, along with numerous other bodies that are similar to it (see Ceres, Eris, Orcus, Makemake, Haumea, and Sedna) If none of this makes sense and your still confused for any reason, just ask and I'll be glad to explain in MUCH greater detail.
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Posted: Tue Apr 28, 2009 7:37 am
Its just a different type of planet, that's how science goes sometimes we find something that makes us rethink what we know about the Universe and Pluto is one of those kinds of things. Its thought that Pluto will be a lot like Neptune's moon Triton though we wont really know until we take a closer look. It may have a type of geological activity like that found on Triton.
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M u s t a n g Vice Captain
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Posted: Tue Apr 28, 2009 7:46 am
I find that rather likely myself, seeing as how Pluto's "seasonal" atmosphere appears to be similar to Triton's, and they formed in very similar conditions.
We'll know for sure in a few years anyways, looking forward to New Horizons flyby.
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Posted: Tue Apr 28, 2009 8:14 am
Noxes Kaj I find that rather likely myself, seeing as how Pluto's "seasonal" atmosphere appears to be similar to Triton's, and they formed in very similar conditions. We'll know for sure in a few years anyways, looking forward to New Horizons flyby. Its exciting isn't it, I cant wait to see those pictures that New Horizons brings back. The images we have now show the slightest of detail between light and dark, to think that that dark stuff may be the same type of gooey organic deposes we find getting spewed out of geysers on Triton. At the same time we'd be able to add Pluto to the list of worlds observed to be geologically active and even though its not the same type of geologic activity caused by internal heat like on Io, Triton's geysers are still kick a**, and to find them on Pluto would be even more exciting. Just think if there are those types of geysers think about how crazy they must go when Pluto is at its perihelion, when it comes closer to the sun than Neptune.
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M u s t a n g Vice Captain
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Posted: Mon May 25, 2009 7:02 pm
Pluto is not a planet anymore. It has been reclassified as a dwarf planet, along with asteroid Ceres and a few other bodies from the Kuiper Belt, some of which bigger than Pluto. There might be as much as 50 other bodies in the Kuiper Belt bigger or equal in size to Pluto. So having 60 planets or so in the Solar System would sound a bit ridiculous...
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Posted: Sun Jun 07, 2009 2:07 am
because of it's size right now yeah it's no longer considered a planet
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M u s t a n g Vice Captain
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Posted: Sun Jun 07, 2009 11:48 am
Ninniku Shiroi because of it's size right now yeah it's no longer considered a planet earth was once that size too, Pluto is a stage in early planetary formation its still considered a planet but its in the group of minor planets that we now call dwarf planets. Pluto wasn't the first dwarf planet to be discovered, but its the one that brought about that tittle. Ceres in the asteroid belt was discovered in the 1800s and it was not considered a planet like Earth and Mars. It was called a minor planet.
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Posted: Sun Jun 07, 2009 2:07 pm
M u s t a n g Ninniku Shiroi because of it's size right now yeah it's no longer considered a planet earth was once that size too, Pluto is a stage in early planetary formation its still considered a planet but its in the group of minor planets that we now call dwarf planets. Pluto wasn't the first dwarf planet to be discovered, but its the one that brought about that tittle. Ceres in the asteroid belt was discovered in the 1800s and it was not considered a planet like Earth and Mars. It was called a minor planet. Exactly! and now they've discovered a few more dwarf planets to add to the list.
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