Moon and Earth share water source

http://news.brown.edu/pressreleases/2013/05/moonwater
http://www.skyandtelescope.com/news/...206859621.html

One explanation for the low deuterium/hydrogen ratio in ocean water
is based on the D/H ratio of hydrogen trapped in midocean
ridge basalts (tholeites). The ratio here is 77% lower than in ocean
water.
In addition to elevated deuterium, tholeites contain elevated amounts
of
primordial helium-3 and primordial neon-20, which point to primordial
origin of hydrogen.
http://www.sciencedirect.com/science...012821X7690118
Lowest D/H ratios in the solar system are found in the Sun,Jupiter
and Saturn:
http://www.lpi.usra.edu/books/MESSII/9038.pdf
John Curtis