Although the new data help us to address some of our questions, they also produce new questions. Together, these new data challenge our understanding of the origin of the Moon and its geologic/thermal evolution and this, of course, has tremendous implications for our understanding of all other planetary bodies. Similarly, innovative remote sensing techniques allow us to study the spatial and temporal distribution of hydrogen across the lunar surface. For example, the detection of water in lunar glasses was only recently possible with highly accurate analytical methods. Despite the fact that we have been to the Moon, we are far from being done with it. Almost 40 years since the last lunar sample return, the samples keep revealing new and exciting information about the Moon. These samples allow us to study the Moon in great detail with increasingly sophisticated analytical techniques.

It is the only planetary body, other than the Earth, for which we have samples from known, specifically chosen, and well-characterized locations.

The Moon is our closest neighbor and is both scientifically and technologically of immense importance for the understanding and exploration of our solar system.

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