Water detected in lunar rock

by Anonymous on Jul. 10th, 2008

The Moon: The Moon's polar regions could hold frozen water.
The Moon: The Moon's polar regions could hold frozen water.Courtesy NASA
NASA scientists have announced the discovery of traces of water in lunar rock samples brought back from the Moon during the Apollo 15 and Apollo 17 missions in the early 1970s.

New technology has allowed microscopic traces of elements to be detected, and the findings raise questions about long-held theories regarding the Moon's origin from Earth's collision with a Mars-sized object about 4.5 billion years ago.

"It suggests that water was present within the Earth before the giant collision that formed the moon," said lead author Alberto Saal, a geologist at Brown University.

But what happened to the lunar water? The Moon's weak gravity couldn't have held an atmosphere so scientists think it either drifted into space or gathered at the poles where it remains as lunar ice.

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