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Re: The outer planets


-----Original Message-----
From: Ron Baalke <BAALKE@kelvin.jpl.nasa.gov>
To: meteorite-list@meteoritecentral.com
<meteorite-list@meteoritecentral.com>
Date: Tuesday, November 09, 1999 9:51 PM
Subject: Re: The outer planets


|>My question is, could Jupiter, Saturn, Uranus, Neptune, have been large
|>comets themselves before coming to an inactive or dormant state known as a
|>gaseous 'planet'?
|
|Probably not, since the bulk of the gaseous planets are helium and
hydrogen,
|which is quite different from the makeup of a comet.


Admittedly, comets do not have sufficient gravitational force to retain all
of their gases, as do the large 'planets'.

|Also, the gaseous planets are not inactive, nor are they dormant.

I was not referring to them as inactive or dormant in terms of their
existence as a 'planet', rather inactive as a comet travelling the galaxy.
In that sense, they would be considered kaput, but very active at the same
time:-)

Thank you, Ron.  As always, it's been a pleasure.
Julia
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