Gee, that seems logical and easy too.
Jerry Flaherty
----- Original Message -----
From: "Sterling K. Webb" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; "Rob McCafferty" <[EMAIL PROTECTED]>
Cc: <[email protected]>
Sent: Tuesday, August 22, 2006 9:49 PM
Subject: Re: [meteorite-list] Devil's advocate
Hi,
Compared to Jupiter, the WHOLE solar system
is nothing but debris. Why not ONE planet? Easy
definition, short list to memorize...
Sterling K. Webb
---------------------------------------------------------
----- Original Message -----
From: "Darren Garrison" <[EMAIL PROTECTED]>
To: "Rob McCafferty" <[EMAIL PROTECTED]>
Cc: <[email protected]>
Sent: Tuesday, August 22, 2006 6:20 PM
Subject: Re: [meteorite-list] Devil's advocate
On Tue, 22 Aug 2006 15:43:31 -0700 (PDT), you wrote:
If Pluto crosses the orbit of Neptune (which it does)
then one has to ask if Neptune is a planet since it
hasn't cleared its orbit of debris. Surely Pluto
counts as pretty significant debris if we're stll
asking whether it's a planet or not!?
Neptune mass: 1.0247e26 kg
Pluto mass: 1.27e22 kg
So to 2 significant figures (if I'm doing my math right) Neptune is 8000
times
the mass of Pluto-- or Pluto is around .0125 percent as massive as Saturn.
So,
in comparison, for a 180 pound person, that amount of "mass" would be
around 10
grams, or a handful of hair and a couple of toenail clippings. I wouldn't
call
that "significant" debris.
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