Moon's Axis Shifted 6° Over 1 Billion Years | Video

Ice in the deep shadowed crates at the Moon’s poles holds the history of our satellite’s axial tilt. About 3 Billion years ago, volcanic activity boiled off hydrogen from these regions, marking the slow shift. Luna is now classified as a “true polar wanderer” a distinction shared with only a few other bodes in our Solar System. (Full Story)

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credit : James Keane, U of Arizona