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Old 24-August-2006, 02:48 PM
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Default Pluto loses status as a planet

It's Official - From the BBC news site

I know Wolverine has mentioned the passing of resolution 5A on another thread, but for the announcement would it be an idea to use this thread?
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Old 24-August-2006, 02:50 PM
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yep... just read the story on yahoo.com

amazing... poor poor pluto
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Old 24-August-2006, 02:52 PM
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Note: extra O removed from thread title.
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Old 24-August-2006, 02:53 PM
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Note: extra O removed from thread title.
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Old 24-August-2006, 02:56 PM
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MSNBC: Scientists decide Pluto’s no longer a planet
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Old 24-August-2006, 02:58 PM
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"your going to regret that one. You are now a colonoscope...
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Old 24-August-2006, 02:58 PM
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Note: extra O removed from thread title.
Although `roundish`, it is clearly not a planet.
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Old 24-August-2006, 03:02 PM
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Looks as if science won over popular opinion. T'was Xena that killed Pluto.
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Old 24-August-2006, 03:03 PM
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That's progress folks, time to accept the decision and move on. I wonder if a ninth planet is out there and when this debate will flare up again.....
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Old 24-August-2006, 03:03 PM
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-

Last edited by Dubb; 09-November-2007 at 02:39 AM.
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Old 24-August-2006, 03:06 PM
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No, it (along with Charon) is a Kuiper belt object, the same as Sedna, the same as 'Xena' etc.
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Old 24-August-2006, 03:06 PM
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Pluto and other would-be planets are now called "dwarf planets". Everything else (not counting satellites) are "small solar system bodies".

Ah, Resolution 6A passed: Pluto and "Pluto's Pals" officially form a new type of trans-Neptunian objects.
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Old 24-August-2006, 03:09 PM
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Sorry - 'Trans Neptunian Objects' or as we've been calling them for years, 'Kuiper Belt Objects'!
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Old 24-August-2006, 03:09 PM
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Although `roundish`, it is clearly not a planet.
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Old 24-August-2006, 03:12 PM
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Sorry - 'Trans Neptunian Objects' or as we've been calling them for years, 'Kuiper Belt Objects'!
No, dwarf planets (Pluto, 2003 UB313, etc.) that orbit beyond Neptune form a new class of objects.
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Old 24-August-2006, 03:12 PM
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I'm confused. If the definition is:
“a celestial body that is in orbit around the sun, has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a ... nearly round shape, and has cleared the neighborhood around its orbit.”
Then what does the overlapping orbit have to do with it?
Pluto is automatically disqualified because its oblong orbit overlaps with Neptune’s.
Is that because it hasn't cleared Neptune from it's orbit? I think a better explaination is in order.

It was unclear how Pluto’s demotion might affect the mission of NASA’s New Horizons spacecraft, which earlier this year began a 9˝-year journey to the oddball object to unearth more of its secrets.

Yep; the science of Pluto isn't valid anymore.

Charon, the largest of Pluto’s three moons, is no longer under consideration for any special designation.

Is Charon still considered a moon if Pluto isn't a planet? Is there a definition of a moon? (that'll probably be the next controversy)
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Old 24-August-2006, 03:15 PM
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Resolution 6B not passed, i.e. they're not officially called "Plutonian objects".
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Old 24-August-2006, 03:16 PM
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Is Charon still considered a moon if Pluto isn't a planet? Is there a definition of a moon? (that'll probably be the next controversy)
Pluto is not a planet, nor is Charon. The definition of a satellite remains open, as well the definition of planets beyond the Solar System.
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Old 24-August-2006, 03:18 PM
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Live webcast here for what's left of the business.
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Old 24-August-2006, 03:20 PM
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No, dwarf planets (Pluto, 2003 UB313, etc.) that orbit beyond Neptune form a new class of objects.
Yes, you're quite right - apologies. I think its a bit of a fudge myself. 'Is it a planet'? Well no, it is a 'dwarf' planet.

Is a Dwarf star not a real star then?

I don't think it resolves much. It certainly doesn't detract from the fact that Pluto is a system which we should try and find out as much as possible about.
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Old 24-August-2006, 03:21 PM
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So will NASA cancel New Horizons whilst it is in flight and save the money for