Fw: [meteorite-list] Lunar capture theory

From: Adam Hupe <adamhupe_at_meteoritecentral.com>
Date: Thu Apr 22 10:21:03 2004
Message-ID: <023401c347fb$26c95d00$b4dbe60c_at_attbi.com>

----- Original Message -----
From: "Adam Hupe" <adamhupe_at_comcast.net>
To: "Tom aka James Knudson" <knudson911_at_frontiernet.net>
Sent: Friday, July 11, 2003 3:13 PM
Subject: Re: [meteorite-list] Lunar capture theory


> Dear Tom and List,
>
> The chemical makeup is very similar between the Moon and the Earth.
> Remember the moon is dry without a real atmosphere and this accounts for a
> lot when talking about mineralogy. The Earth is very geologically active,
> has water and an atmosphere accounting for most of the differences between
> Moon and Earth rocks. 4.5 billion years when the moon was created they
> probably had a lot more in common.
>
> Adam
>
>
> ----- Original Message -----
> From: "Tom aka James Knudson" <knudson911_at_frontiernet.net>
> To: "Ken O'Neill" <kenoneill_at_kenoneill.com>; "Meteorite-List (E-mail)"
> <meteorite-list_at_meteoritecentral.com>
> Sent: Friday, July 11, 2003 3:04 PM
> Subject: Re: [meteorite-list] Lunar capture theory
>
>
> > 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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Received on Fri 11 Jul 2003 06:24:08 PM PDT