[meteorite-list] Lunar capture theory

From: Tom aka James Knudson <knudson911_at_meteoritecentral.com>
Date: Thu Apr 22 10:21:03 2004
Message-ID: <015401c347f8$683a0440$17c743d8_at_malcolm>

Hello Ken And list, If the moon was made by the giant impact theory, it
would make the chemical make up of the two very similar, wouldn't it?
  If the moon was made by the same debris theory it would make the chemical
make up of the two very similar, wouldn't it?
Thanks, Tom
Peregrineflier
The proudest member of the IMCA 6168
----- Original Message -----
From: Ken O'Neill <kenoneill_at_kenoneill.com>
To: 'Tom aka James Knudson' <knudson911_at_frontiernet.net>; Meteorite-List
(E-mail) <meteorite-list_at_meteoritecentral.com>
Sent: Friday, July 11, 2003 2:52 PM
Subject: RE: [meteorite-list] Lunar capture theory


> Hi Tom & list
> It's beyond me as well ! Robert Matson seems very much on the debris side,
I
> was just wondering if the debris was correct should there be little
> difference in the chemical make up of the Moon and Earth ? What is the
> comparison ? How different are they ? Its just a general question for the
> list.
>
> Regards
>
> Ken O'Neill
> Ken O'Neill Computing - The Small Business & Education IT Specialists
> Networks - email - Internet Access - PC's - Security - Cost Efficient IT
> Solutions
> www.kenoneill.com <http://www.kenoneill.com>
> Phone 042 9694683
> Mobile 087 9118186
>
>
> -----Original Message-----
> From: Tom aka James Knudson [mailto:knudson911_at_frontiernet.net]
> Sent: 11 July 2003 22:40
> To: Ken O'Neill
> Subject: Re: [meteorite-list] Lunar capture theory
>
>
> Hello Ken, I hope your not directing this question to me, It is beyond my
> knowledge! What do you think of the same debris theory, that as far as I
> know I first came up with a few minutes ago?
> Thanks, Tom
> Peregrineflier
> The proudest member of the IMCA 6168
> ----- Original Message -----
> From: Ken O'Neill <kenoneill_at_kenoneill.com>
> To: Meteorite-List (E-mail) <meteorite-list_at_meteoritecentral.com>
> Sent: Friday, July 11, 2003 2:19 PM
> Subject: RE: [meteorite-list] Lunar capture theory
>
>
> > Hi List,
> >
> > Would there be anything in the geological comparison between Earth and
> Moon
> > that would lean toward the "capture" rather than "same debris" theory or
> > vice versa ?
> >
> > Regards
> >
> > Ken O'Neill
> >
> >
> >
> > -----Original Message-----
> > From: meteorite-list-admin_at_meteoritecentral.com
> > [mailto:meteorite-list-admin_at_meteoritecentral.com]On Behalf Of Tom aka
> > James Knudson
> > Sent: 11 July 2003 21:48
> > To: Matson, Robert; meteorite-list
> > Subject: Re: [meteorite-list] Lunar capture theory
> >
> >
> > Hello Robert and list, My understanding of planet formation in a
nutshell
> is
> > that debris orbiting the Sun gradually merged and formed planets. Right?
> > Why couldn't two bodies have formed from the same debris in the same
> > orbit and orbiting around the sun together in the same direction and the
> > same orbit, Gradually the Moon slowly caught up with the earth and got
> > caught up in the earths gravity? Or the earth came up behind the Moon
and
> > captured it?
> >
> > Thanks, Tom
> > Peregrineflier
> > The proudest member of the IMCA 6168
> > ----- Original Message -----
> > From: Matson, Robert <ROBERT.D.MATSON_at_saic.com>
> > To: meteorite-list <meteorite-list_at_meteoritecentral.com>
> > Sent: Friday, July 11, 2003 1:01 PM
> > Subject: [meteorite-list] Lunar capture theory
> >
> >
> > > Tom wrote:
> > >
> > > > I do not believe the moon was made by a asteroid impact on the
> > > > earth.
> > >
> > > What, specifically, about this theory bothers you?
> > >
> > > > I would first stand by the theory that it was caught up in our
> > > > gravity.
> > >
> > > While this is a ~possible~ scenario, you have to understand how
> > > extremely unlikely graceful capture is compared to impact.
> > > The capture idea also has a difficult time explaining why the
> > > Moon doesn't have a normal-sized core for a body of its size,
> > > which the impact theory explains nicely. Finally, why the
> > > oxygen-isotope similarity of earth and the Moon if the two
> > > bodies formed in different parts of the solar system?
> > >
> > > Prior to the Apollo sample return missions (and the discovery
> > > of our beloved lunar meteorites), the capture theory at least
> > > had some wobbly legs to stand on. But O-isotope analysis of
> > > the moon rocks knocked one leg out, and the other leg was swept
> > > away by Lunar Prospector's confirmation that the moon's core
> > > comprises less than 3% of the moon's mass.
> > >
> > > --Rob
> > >
> > >
> > >
> > > ______________________________________________
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> > >
> >
> >
> >
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Received on Fri 11 Jul 2003 06:04:30 PM PDT