Moon May Have Once Had Water

Smivs writes "US scientists have found evidence that water was held in the Moon's interior, challenging some elements of the theory of how Earth's satellite formed.The Moon is thought to have been created in a violent collision between Earth and another planet-sized object. Scientists thought the heat from this impact had vaporised all the water. But a new study in Nature magazine shows water was delivered to the lunar surface from the interior in volcanic eruptions three billion years ago. This suggests that water has been a part of the Moon since its early existence."

Comments

Water on Moon and Mars

[Bombula]

I'm not sure why there's such suprise about discovering water on the Moon, Mars and other bodies in the solar system. Not only are comets and debris certain to have delivered significant quantities to every significant object in the solar system, it seems patently obvious that accretion is not a perfect centrifuge. If it were otherwise, Mercury would be comprised of 100% of one material - say, gold - while earth would be 100% iron or nickel, Mars 100% something else, and so on.

Since this is not the case, it seems not just obvious but inevitable that virtually all materials be found in some quantity within every signficant body in the solar system.