The moon’s poles have no fixed address
Ancient volcanoes may have shifted lunar balance and sent surface spots wandering
![moon poles](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/03/032316_cc_lunar-pols_feat_free.jpg?fit=860%2C460&ssl=1)
WANDERING POLES Deposits of hydrogen (white) mark where the moon’s poles used to be. The hydrogen, seen in these maps from the Lunar Prospector mission, is a proxy for water that froze in the ancient polar regions.
James Tuttle Keane