May
10
2013
Watery Moon
The dark regions on the Moon were once considered seas full of water. Well that is not true but there is some water on the Moon. Researchers used a multicollector ion microprobe to study hydrogen-deuterium ratios in lunar rock and on Earth. Their conclusion: The Moon’s water did not come from comets but was already present on Earth 4.5 billion years ago, when a giant collision sent material from Earth to form the Moon.
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