How old is the moon?
New Method for Estimating Moon's Age Seeks to Put an
Old Debate to Rest, National Geographic, April 2, 2014
http://news.nationalgeographic.com/news/2014/04/140402-moon-formation-earth-age-space-science/
How old is the moon? New dating method offers clues.
Christian Science Monitor April 3, 2014
http://www.csmonitor.com/Science/2014/0403/How-old-is-the-moon-New-dating-method-offers-clues
The paper is:
Jacobson, S. A., A. Morbidelli, S. N. Raymond, D.
P. O'Brien, K. J. Walsh, and D. C. Rubie, 2014,
Highly siderophile elements in Earth’s mantle as
a clock for the Moon-forming impact. Nature.
vol. 508, no. 7494, pp. 84–87. doi:10.1038/nature13172
http://www.nature.com/nature/journal/v508/n7494/full/nature13172.html
Yours,
Paul H.