Who owns the moon? Now that would have been a good Stump the Librarian question. From the Moritz Legal Information Blog:
The United Nations Office for Outer Space Affairs (UNOOSA) is a good place to start research on outer space law issues. Its International Space Law website has links to treaties, selected national laws, UN resolutions, and FAQ about space law(including who may own a celestial body such as the moon) .
EISIL’s space law directory is another good place to begin research. It has links to primary documents and other space law websites.
Google Mars and Google Moon use the Google Earth technology to allow users to virtually visit outer space. Google Mars has more features, but both map where people and our spacecraft have visited.