ice on the moon

Ancient Polar Ice Reveals Tilting of Earth’s Moon

Ancient Polar Ice Reveals Tilting of Earth’s Moon

Did the “man in the moon” look different from ancient Earth? New NASA-funded research provides evidence that the spin axis of Earth’s moon shifted by about five degrees roughly three billion years ago. The evidence of this motion is recorded in the distribution of ancient lunar ice, evidence of delivery of water to the early solar system.