The South Pole-Aitken basin (circled) is the largest impact crater in the solar system. One edge lies on the Moon's south pole, while its centre lies about 30° away (Image: Clementine Project/LPI)
When the Days Were Shorter
Alaska Science Forum (Article #742) | November 11, 1985 | Larry Gedney
Posted on 10/04/2004 1:31:59 PM EDT by SunkenCiv
Long-Destroyed Fifth Planet May Have
Caused Lunar Cataclysm, Researchers Say
SPACE dot COM | 18 March 2002 ,posted: 03:00 pm ET
By Leonard David, Senior Space Writer
Posted on 03/25/2002 5:42:10 PM EST by vannrox
Moon Chemistry Confirms Violent Origin
SPACE.com | 22 August 2006 | Jeanna Bryner
Posted on 08/23/2006 1:24:06 PM EDT by Boxen
International Declaration Signed Advocating Return to the Moon
Space.com | December 5, 2003 | Leonard David
Posted on 12/05/2003 7:30:29 AM EST by Cincinatus’ Wife
Scientists Eager to Explore Moon’s South Pole
Space News | 06-09-2003 | LEONARD DAVID
Posted on 06/16/2003 12:18:06 PM EDT by boris
Scientists, Dreamers Continue Refining Ideas for Future Lunar Bases
Space.com | 7/18/02 | Leonard David
Posted on 07/18/2002 8:07:19 PM EDT by Brett66
Scientists Press NASA To Reconsider Luna
Published: 30 Mar 01 Author: Leonard David
Posted on 03/30/2001 09:50:09 PST by RightWhale
So after the moon and Pluto, what next? Earth? And the feds will mandate all new globes?
Dr. H. Jay Melosh (mentioned in excerpt)
News seems to be a few billions years old, why would I care? (Operative word may). Love that may thingy.
Reorientation of icy satellites by impact basins
F. Nimmo and I. Matsuyama
Geophys. Res. Lett. , 34, L19203, 2007
Did the new moon lose its iron heart?The current theory says that the material that now forms our moon was ejected when Earth was struck by another planet-sized body. But Peter Noerdlinger at Saint Mary's University in Halifax, Canada, says this theory has problems. "The collision has to be implausibly gentle. You practically need someone to hold a Mars-sized object just above Earth and drop it, to avoid messing up Earth's orbit."
January 23, 2007
The simpler idea that Earth and the moon were both created from the same gas cloud had been rejected because it could not explain why Earth formed an iron core and the moon did not. Now, Noerdlinger has an answer for that.
He suggests that the proto-moon did have an iron core, but that the satellite was ripped apart in a close encounter with Earth. His calculations show that iron from the core would be pulled towards Earth, while the remains of its rocky outer shell reassembled into our iron-free moon.
This fits with evidence that the Earth acquired a veneer of iron after it formed, Noerdlinger says. He presented the work at the American Astronomical Society meeting in Seattle, Washington, last week.
From issue 2587 of New Scientist magazine, 23 January 2007, page 16
Far side of the moon ‘could have been visible from earth’
Telegraph | 1/21/09 | Kate Devlin
Posted on 01/23/2009 12:23:42 AM PST by LibWhacker