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Re: Astro Physical Geology

----- Original Message -----
From: "John S. Denker" <jsd@MONMOUTH.COM>
To: <PHYS-L@lists.nau.edu>
Sent: Saturday, October 19, 2002 9:31 AM
Subject: Re: Astro Physical Geology


paul o johnson wrote:

... every impact not only added to but likely subtracted from Earth's
mass.

Not _every_ impact, not by a long shot. Only reeeeally
violent impacts can subtract.

Has any planetary scientist addressed this question?

Presumably all of them. This is pretty much the standard
moon-formation theory nowadays.

You speak with straight tongue, Kemosabe, but you did not address my first
question at all and you only traipse around the periphery of my second
question. Please re-read my message.

poj

This posting is the position of the writer, not that of SUNY-BSC, NAU or the AAPT.