Ice near the lunar north and south poles show a shift in the moon's axis

The moon’s poles have shifted over the eons, likely as a result of geological activity beneath the lunar crust, a new study suggests.

This finding — which is based on an analysis of the distribution of water ice near the lunar north and south poles — sheds light on the structure and evolution of the moon, and also provides clues about where Earth’s water came from, researchers said.

“The ice at the poles of the moon records the interior evolution of the moon, which seems crazy — that is the last place you would think to look,” said study lead author Matt Siegler, of the Planetary Science Institute in Tucson, Arizona, and Southern Methodist University in Dallas. Read more…