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Ancient lunar polar ice reveals tilting of Moon’s axis

23 March 2016 Astronomy Now

Did the “Man in the Moon” look different from ancient Earth? New NASA-funded research provides evidence that the spin axis of the 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.

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Pluto’s puzzling patterns and pits

17 October 2015 Astronomy Now

It seems that the more we see of Pluto, the more fascinating it gets. This latest image, from the heart of Pluto’s heart feature, shows the plains’ enigmatic cellular pattern as well as unusual clusters of small pits and troughs. Adding to the intrigue is that even at this resolution of 250 metres, no impact craters are seen, testifying to the region’s extreme geologic youth.