Not that I know of, the sources did not indicate that this may be the case. The sources indicated that the contraction could be caused by the cooling of the inner core of the Moon.

Tyrol5 (talk)19:44, 23 August 2010

i.e. the contraction of solid phases. Thank you. :-)

Meistertrunk007 (talk)17:13, 24 August 2010

there is water on the moon

207.108.118.142 (talk)15:46, 22 March 2011