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Fredski
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Pluto, Charon, Earth

01/30/2016 7:23 PM

still think its a dwarf?
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SolarEagle
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#1

Re: Pluto, Charon Earth

01/30/2016 8:14 PM

Maybe a mini-planet...Quaoar is called a planetoid...

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Tornado
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#2

Re: Pluto, Charon Earth

01/30/2016 8:41 PM

Whatever the line is seems arbitrary.

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Fredski
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#3
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Re: Pluto, Charon Earth

01/30/2016 9:03 PM

Its to scale, I thought it was informative we just got another batch of images from Nasa, more ice and "water-ice". its far more interesting than Mars
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truth is not a compromise
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#4

Re: Pluto, Charon Earth

01/30/2016 11:57 PM

Canada isn'the big enough to be a regulation planet, so neither is Pluto.

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Crabtree
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#5

Re: Pluto, Charon Earth

01/31/2016 4:18 PM

So that's where my golf ball went!

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Usbport
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#6

Re: Pluto, Charon, Earth

01/31/2016 8:45 PM

Keep in mind that in the stellar classification system the Sun is a Type G2 star, Luminosity Class V, and is thus technically considered a 'dwarf' star. Yet unless the person is being extremely rigorous, no astronomer ever refers to the sun as a 'dwarf' star.

The Sun is simply a star.

And for the same reason, there is nothing wrong with calling a dwarf planet a planet.

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Poison
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#7

Re: Pluto, Charon, Earth

02/01/2016 9:13 AM

Funny that Ceres was once considered a planet in the 1800's.
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