Moon's interior 'did hold water'

[Rick]

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.

More: http://news.bbc.co.uk/2/hi/science/nature/7497715.stm