Impact-splash, as a theory of earth-moon formation, is just that : a theory, not a religious tenet to be hyped by Jehovah's Witness type astronomers. It fails on 2 counts : tiny target on the proto-earth's terminator for the mars-sized impactor to hit, given the VAST area for earth orbit crossing asteroids to orbit around in, so as to re-launch a lunar mass beyond the roche lobe. And when a mars directly impacts an earth you get some 10^31 J of instant KE release, a gamma ray burster similar(but FAR larger than) the SL9 comet fragments hitting Jupiter in 1994. Even at 4.4 billion years ago that means no H2O oceans would have appeared on earth by 3.9 B years ago. We wouldn't even BE here, as water-rich critters, if I-S had happened. Wanna know where I-Sers went wrong and what REALLY happened?
You don't know what you are talking about.
other lunar topics I've started:
A Celestial Collision
Alaska Science Forum ^ | February 10, 1983 | Larry Gedney
Posted on 09/15/2004 9:04:28 AM PDT by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1216757/posts
In the shadow of the Moon
New Scientist ^ | 30 January 1999 | editors
Posted on 08/31/2004 8:42:25 AM PDT by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1203912/posts
It Came from Outer Space?
American Scientist ^ | November-December 2004 | David Schneider
Posted on 11/25/2004 5:13:07 PM PST by SunkenCiv
http://www.freerepublic.com/focus/chat/1288537/posts
When the Days Were Shorter
Alaska Science Forum (Article #742) ^ | November 11, 1985 | Larry Gedney
Posted on 10/04/2004 10:31:59 AM PDT by SunkenCiv
http://www.freerepublic.com/focus/f-chat/1234919/post